http://git-wip-us.apache.org/repos/asf/incubator-impala/blob/ae2f8d03/docs/build/html/topics/impala_known_issues.html ---------------------------------------------------------------------- diff --git a/docs/build/html/topics/impala_known_issues.html b/docs/build/html/topics/impala_known_issues.html index e496bdc..f9017d2 100644 --- a/docs/build/html/topics/impala_known_issues.html +++ b/docs/build/html/topics/impala_known_issues.html @@ -87,11 +87,24 @@ </div> + <article class="topic concept nested3" aria-labelledby="ariaid-title5" id="IMPALA-1972__IMPALA-4595"> + <h4 class="title topictitle4" id="ariaid-title5">Linking IR UDF module to main module crashes Impala</h4> + <div class="body conbody"> + <p class="p"> + A UDF compiled as an LLVM module (<code class="ph codeph">.ll</code>) could cause a crash + when executed. + </p> + <p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-4595"; target="_blank">IMPALA-4595</a></p> + <p class="p"><strong class="ph b">Severity:</strong> High</p> + <p class="p"><strong class="ph b">Resolution:</strong> Fixed in <span class="keyword">Impala 2.8</span> and higher.</p> + <p class="p"><strong class="ph b">Workaround:</strong> Compile the external UDFs to a <code class="ph codeph">.so</code> library instead of a + <code class="ph codeph">.ll</code> IR module.</p> + </div> </article> - <article class="topic concept nested2" aria-labelledby="ariaid-title5" id="known_issues_crash__IMPALA-3069"> + <article class="topic concept nested3" aria-labelledby="ariaid-title6" id="IMPALA-1972__IMPALA-3069"> - <h3 class="title topictitle3" id="ariaid-title5">Setting BATCH_SIZE query option too large can cause a crash</h3> + <h4 class="title topictitle4" id="ariaid-title6">Setting BATCH_SIZE query option too large can cause a crash</h4> <div class="body conbody"> @@ -114,9 +127,9 @@ </article> - <article class="topic concept nested2" aria-labelledby="ariaid-title6" id="known_issues_crash__IMPALA-3441"> + <article class="topic concept nested3" aria-labelledby="ariaid-title7" id="IMPALA-1972__IMPALA-3441"> - <h3 class="title topictitle3" id="ariaid-title6">Impala should not crash for invalid avro serialized data</h3> + <h4 class="title topictitle4" id="ariaid-title7">Impala should not crash for invalid avro serialized data</h4> <div class="body conbody"> @@ -138,9 +151,9 @@ </article> - <article class="topic concept nested2" aria-labelledby="ariaid-title7" id="known_issues_crash__IMPALA-2592"> + <article class="topic concept nested3" aria-labelledby="ariaid-title8" id="IMPALA-1972__IMPALA-2592"> - <h3 class="title topictitle3" id="ariaid-title7">Queries may hang on server-to-server exchange errors</h3> + <h4 class="title topictitle4" id="ariaid-title8">Queries may hang on server-to-server exchange errors</h4> <div class="body conbody"> @@ -161,9 +174,9 @@ </article> - <article class="topic concept nested2" aria-labelledby="ariaid-title8" id="known_issues_crash__IMPALA-2365"> + <article class="topic concept nested3" aria-labelledby="ariaid-title9" id="IMPALA-1972__IMPALA-2365"> - <h3 class="title topictitle3" id="ariaid-title8">Impalad is crashing if udf jar is not available in hdfs location for first time</h3> + <h4 class="title topictitle4" id="ariaid-title9">Impalad is crashing if udf jar is not available in hdfs location for first time</h4> <div class="body conbody"> @@ -184,9 +197,9 @@ </article> - <article class="topic concept nested1" aria-labelledby="known_issues_performance__ki_performance" id="known_issues__known_issues_performance"> + <article class="topic concept nested2" aria-labelledby="known_issues_performance__ki_performance" id="known_issues_crash__known_issues_performance"> - <h2 class="title topictitle2" id="known_issues_performance__ki_performance">Impala Known Issues: Performance</h2> + <h3 class="title topictitle3" id="known_issues_performance__ki_performance">Impala Known Issues: Performance</h3> <div class="body conbody"> @@ -196,11 +209,11 @@ </div> - <article class="topic concept nested2" aria-labelledby="ariaid-title10" id="known_issues_performance__IMPALA-1480"> + <article class="topic concept nested3" aria-labelledby="ariaid-title11" id="known_issues_performance__IMPALA-1480"> - <h3 class="title topictitle3" id="ariaid-title10">Slow DDL statements for tables with large number of partitions</h3> + <h4 class="title topictitle4" id="ariaid-title11">Slow DDL statements for tables with large number of partitions</h4> <div class="body conbody"> @@ -224,9 +237,9 @@ </article> - <article class="topic concept nested1" aria-labelledby="known_issues_usability__ki_usability" id="known_issues__known_issues_usability"> + <article class="topic concept nested2" aria-labelledby="known_issues_usability__ki_usability" id="known_issues_crash__known_issues_usability"> - <h2 class="title topictitle2" id="known_issues_usability__ki_usability">Impala Known Issues: Usability</h2> + <h3 class="title topictitle3" id="known_issues_usability__ki_usability">Impala Known Issues: Usability</h3> <div class="body conbody"> @@ -236,9 +249,24 @@ </div> - <article class="topic concept nested2" aria-labelledby="ariaid-title12" id="known_issues_usability__IMPALA-3133"> + <article class="topic concept nested3" aria-labelledby="ariaid-title13" id="known_issues_usability__IMPALA-4570"> + <h4 class="title topictitle4" id="ariaid-title13">Impala shell tarball is not usable on systems with setuptools versions where '0.7' is a substring of the full version string</h4> + <div class="body conbody"> + <p class="p"> + For example, this issue could occur on a system using setuptools version 20.7.0. + </p> + <p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-4570"; target="_blank">IMPALA-4570</a></p> + <p class="p"><strong class="ph b">Severity:</strong> High</p> + <p class="p"><strong class="ph b">Resolution:</strong> Fixed in <span class="keyword">Impala 2.8</span> and higher.</p> + <p class="p"><strong class="ph b">Workaround:</strong> Change to a setuptools version that does not have <code class="ph codeph">0.7</code> as + a substring. + </p> + </div> + </article> + + <article class="topic concept nested3" aria-labelledby="ariaid-title14" id="known_issues_usability__IMPALA-3133"> - <h3 class="title topictitle3" id="ariaid-title12">Unexpected privileges in show output</h3> + <h4 class="title topictitle4" id="ariaid-title14">Unexpected privileges in show output</h4> <div class="body conbody"> @@ -266,9 +294,9 @@ </article> - <article class="topic concept nested2" aria-labelledby="ariaid-title13" id="known_issues_usability__IMPALA-1776"> + <article class="topic concept nested3" aria-labelledby="ariaid-title15" id="known_issues_usability__IMPALA-1776"> - <h3 class="title topictitle3" id="ariaid-title13">Less than 100% progress on completed simple SELECT queries</h3> + <h4 class="title topictitle4" id="ariaid-title15">Less than 100% progress on completed simple SELECT queries</h4> <div class="body conbody"> @@ -284,9 +312,9 @@ </article> - <article class="topic concept nested2" aria-labelledby="ariaid-title14" id="known_issues_usability__concept_lmx_dk5_lx"> + <article class="topic concept nested3" aria-labelledby="ariaid-title16" id="known_issues_usability__concept_lmx_dk5_lx"> - <h3 class="title topictitle3" id="ariaid-title14">Unexpected column overflow behavior with INT datatypes</h3> + <h4 class="title topictitle4" id="ariaid-title16">Unexpected column overflow behavior with INT datatypes</h4> <div class="body conbody"> @@ -310,9 +338,9 @@ </article> - <article class="topic concept nested1" aria-labelledby="known_issues_drivers__ki_drivers" id="known_issues__known_issues_drivers"> + <article class="topic concept nested2" aria-labelledby="known_issues_drivers__ki_drivers" id="known_issues_crash__known_issues_drivers"> - <h2 class="title topictitle2" id="known_issues_drivers__ki_drivers">Impala Known Issues: JDBC and ODBC Drivers</h2> + <h3 class="title topictitle3" id="known_issues_drivers__ki_drivers">Impala Known Issues: JDBC and ODBC Drivers</h3> <div class="body conbody"> @@ -323,11 +351,11 @@ </div> - <article class="topic concept nested2" aria-labelledby="ariaid-title16" id="known_issues_drivers__IMPALA-1792"> + <article class="topic concept nested3" aria-labelledby="ariaid-title18" id="known_issues_drivers__IMPALA-1792"> - <h3 class="title topictitle3" id="ariaid-title16">ImpalaODBC: Can not get the value in the SQLGetData(m-x th column) after the SQLBindCol(m th column)</h3> + <h4 class="title topictitle4" id="ariaid-title18">ImpalaODBC: Can not get the value in the SQLGetData(m-x th column) after the SQLBindCol(m th column)</h4> <div class="body conbody"> @@ -351,9 +379,9 @@ </article> - <article class="topic concept nested1" aria-labelledby="known_issues_security__ki_security" id="known_issues__known_issues_security"> + <article class="topic concept nested2" aria-labelledby="known_issues_security__ki_security" id="known_issues_crash__known_issues_security"> - <h2 class="title topictitle2" id="known_issues_security__ki_security">Impala Known Issues: Security</h2> + <h3 class="title topictitle3" id="known_issues_security__ki_security">Impala Known Issues: Security</h3> <div class="body conbody"> @@ -364,11 +392,11 @@ </div> - <article class="topic concept nested2" aria-labelledby="ariaid-title18" id="known_issues_security__renewable_kerberos_tickets"> + <article class="topic concept nested3" aria-labelledby="ariaid-title20" id="known_issues_security__renewable_kerberos_tickets"> - <h3 class="title topictitle3" id="ariaid-title18">Kerberos tickets must be renewable</h3> + <h4 class="title topictitle4" id="ariaid-title20">Kerberos tickets must be renewable</h4> <div class="body conbody"> @@ -391,9 +419,9 @@ - <article class="topic concept nested1" aria-labelledby="known_issues_resources__ki_resources" id="known_issues__known_issues_resources"> + <article class="topic concept nested2" aria-labelledby="known_issues_resources__ki_resources" id="known_issues_crash__known_issues_resources"> - <h2 class="title topictitle2" id="known_issues_resources__ki_resources">Impala Known Issues: Resources</h2> + <h3 class="title topictitle3" id="known_issues_resources__ki_resources">Impala Known Issues: Resources</h3> <div class="body conbody"> @@ -404,9 +432,120 @@ </div> - <article class="topic concept nested2" aria-labelledby="ariaid-title20" id="known_issues_resources__catalogd_heap"> + <article class="topic concept nested3" aria-labelledby="ariaid-title22" id="known_issues_resources__IMPALA-5605"> + <h4 class="title topictitle4" id="ariaid-title22">Configuration to prevent crashes caused by thread resource limits</h4> + <div class="body conbody"> + <p class="p"> + Impala could encounter a serious error due to resource usage under very high concurrency. + The error message is similar to: + </p> +<pre class="pre codeblock"><code> +F0629 08:20:02.956413 29088 llvm-codegen.cc:111] LLVM hit fatal error: Unable to allocate section memory! +terminate called after throwing an instance of 'boost::exception_detail::clone_impl<boost::exception_detail::error_info_injector<boost::thread_resource_error> >' + +</code></pre> + <p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-5605"; target="_blank">IMPALA-5605</a></p> + <p class="p"><strong class="ph b">Severity:</strong> High</p> + <p class="p"><strong class="ph b">Workaround:</strong> + To prevent such errors, configure each host running an <span class="keyword cmdname">impalad</span> + daemon with the following settings: + </p> +<pre class="pre codeblock"><code> +echo 2000000 > /proc/sys/kernel/threads-max +echo 2000000 > /proc/sys/kernel/pid_max +echo 8000000 > /proc/sys/vm/max_map_count +</code></pre> + <p class="p"> + Add the following lines in <span class="ph filepath">/etc/security/limits.conf</span>: + </p> +<pre class="pre codeblock"><code> +impala soft nproc 262144 +impala hard nproc 262144 +</code></pre> + </div> + </article> + + <article class="topic concept nested3" aria-labelledby="ariaid-title23" id="known_issues_resources__flatbuffers_mem_usage"> + <h4 class="title topictitle4" id="ariaid-title23">Memory usage when compact_catalog_topic flag enabled</h4> + <div class="body conbody"> + <p class="p"> + The efficiency improvement from <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-4029"; target="_blank">IMPALA-4029</a> + can cause an increase in size of the updates to Impala catalog metadata + that are broadcast to the <span class="keyword cmdname">impalad</span> daemons + by the <span class="keyword cmdname">statestored</span> daemon. + The increase in catalog update topic size results in higher CPU and network + utilization. By default, the increase in topic size is about 5-7%. If the + <code class="ph codeph">compact_catalog_topic</code> flag is used, the + size increase is more substantial, with a topic size approximately twice as + large as in previous versions. + </p> + <p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-5500"; target="_blank">IMPALA-5500</a></p> + <p class="p"><strong class="ph b">Severity:</strong> Medium</p> + <p class="p"> + <strong class="ph b">Workaround:</strong> Consider leaving the <code class="ph codeph">compact_catalog_topic</code> + configuration setting at its default value of <code class="ph codeph">false</code> until + this issue is resolved. + </p> + <p class="p"><strong class="ph b">Resolution:</strong> A fix is in the pipeline. Check the status of + <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-5500"; target="_blank">IMPALA-5500</a> for the release where the fix is available.</p> + </div> + </article> + + <article class="topic concept nested3" aria-labelledby="ariaid-title24" id="known_issues_resources__IMPALA-2294"> + <h4 class="title topictitle4" id="ariaid-title24">Kerberos initialization errors due to high memory usage</h4> + <div class="body conbody"> + <div class="p"> + On a kerberized cluster with high memory utilization, <span class="keyword cmdname">kinit</span> commands executed after + every <code class="ph codeph">'kerberos_reinit_interval'</code> may cause out-of-memory errors, because executing + the command involves a fork of the Impala process. The error looks similar to the following: +<pre class="pre codeblock"><code> +Failed to obtain Kerberos ticket for principal: <varname>principal_details</varname> +Failed to execute shell cmd: 'kinit -k -t <varname>keytab_details</varname>', +error was: Error(12): Cannot allocate memory + +</code></pre> + </div> + <p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-2294"; target="_blank">IMPALA-2294</a></p> + <p class="p"><strong class="ph b">Severity:</strong> High</p> + <p class="p"><strong class="ph b">Workaround:</strong></p> + <div class="p"> + The following command changes the <code class="ph codeph">vm.overcommit_memory</code> + setting immediately on a running host. However, this setting is reset + when the host is restarted. +<pre class="pre codeblock"><code> +echo 1 > /proc/sys/vm/overcommit_memory + +</code></pre> + </div><div class="p"> + To change the setting in a persistent way, add the following line to the + <span class="ph filepath">/etc/sysctl.conf</span> file: +<pre class="pre codeblock"><code> +vm.overcommit_memory=1 - <h3 class="title topictitle3" id="ariaid-title20">Impala catalogd heap issues when upgrading to <span class="keyword">Impala 2.5</span></h3> +</code></pre> + </div><p class="p"> + Then run <code class="ph codeph">sysctl -p</code>. No reboot is needed. + </p> + </div> + </article> + + <article class="topic concept nested3" aria-labelledby="ariaid-title25" id="known_issues_resources__drop_table_purge_s3a"> + <h4 class="title topictitle4" id="ariaid-title25">DROP TABLE PURGE on S3A table may not delete externally written files</h4> + <div class="body conbody"> + <p class="p"> + A <code class="ph codeph">DROP TABLE PURGE</code> statement against an S3 table could leave the data files + behind, if the table directory and the data files were created with a combination of + <span class="keyword cmdname">hadoop fs</span> and <span class="keyword cmdname">aws s3</span> commands. + </p> + <p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-3558"; target="_blank">IMPALA-3558</a></p> + <p class="p"><strong class="ph b">Severity:</strong> High</p> + <p class="p"><strong class="ph b">Resolution:</strong> The underlying issue with the S3A connector depends on the resolution of <a class="xref" href="https://issues.apache.org/jira/browse/HADOOP-13230"; target="_blank">HADOOP-13230</a>.</p> + </div> + </article> + + <article class="topic concept nested3" aria-labelledby="ariaid-title26" id="known_issues_resources__catalogd_heap"> + + <h4 class="title topictitle4" id="ariaid-title26">Impala catalogd heap issues when upgrading to <span class="keyword">Impala 2.5</span></h4> <div class="body conbody"> @@ -489,9 +628,9 @@ </article> - <article class="topic concept nested2" aria-labelledby="ariaid-title21" id="known_issues_resources__IMPALA-3509"> + <article class="topic concept nested3" aria-labelledby="ariaid-title27" id="known_issues_resources__IMPALA-3509"> - <h3 class="title topictitle3" id="ariaid-title21">Breakpad minidumps can be very large when the thread count is high</h3> + <h4 class="title topictitle4" id="ariaid-title27">Breakpad minidumps can be very large when the thread count is high</h4> <div class="body conbody"> @@ -520,9 +659,9 @@ </article> - <article class="topic concept nested2" aria-labelledby="ariaid-title22" id="known_issues_resources__IMPALA-3662"> + <article class="topic concept nested3" aria-labelledby="ariaid-title28" id="known_issues_resources__IMPALA-3662"> - <h3 class="title topictitle3" id="ariaid-title22">Parquet scanner memory increase after IMPALA-2736</h3> + <h4 class="title topictitle4" id="ariaid-title28">Parquet scanner memory increase after IMPALA-2736</h4> <div class="body conbody"> @@ -586,9 +725,9 @@ </article> - <article class="topic concept nested2" aria-labelledby="ariaid-title23" id="known_issues_resources__IMPALA-691"> + <article class="topic concept nested3" aria-labelledby="ariaid-title29" id="known_issues_resources__IMPALA-691"> - <h3 class="title topictitle3" id="ariaid-title23">Process mem limit does not account for the JVM's memory usage</h3> + <h4 class="title topictitle4" id="ariaid-title29">Process mem limit does not account for the JVM's memory usage</h4> @@ -612,11 +751,11 @@ </article> - <article class="topic concept nested2" aria-labelledby="ariaid-title24" id="known_issues_resources__IMPALA-2375"> + <article class="topic concept nested3" aria-labelledby="ariaid-title30" id="known_issues_resources__IMPALA-2375"> - <h3 class="title topictitle3" id="ariaid-title24">Fix issues with the legacy join and agg nodes using --enable_partitioned_hash_join=false and --enable_partitioned_aggregation=false</h3> + <h4 class="title topictitle4" id="ariaid-title30">Fix issues with the legacy join and agg nodes using --enable_partitioned_hash_join=false and --enable_partitioned_aggregation=false</h4> <div class="body conbody"> @@ -638,9 +777,9 @@ </article> - <article class="topic concept nested1" aria-labelledby="known_issues_correctness__ki_correctness" id="known_issues__known_issues_correctness"> + <article class="topic concept nested2" aria-labelledby="known_issues_correctness__ki_correctness" id="known_issues_crash__known_issues_correctness"> - <h2 class="title topictitle2" id="known_issues_correctness__ki_correctness">Impala Known Issues: Correctness</h2> + <h3 class="title topictitle3" id="known_issues_correctness__ki_correctness">Impala Known Issues: Correctness</h3> <div class="body conbody"> @@ -650,9 +789,43 @@ </div> - <article class="topic concept nested2" aria-labelledby="ariaid-title26" id="known_issues_correctness__IMPALA-3084"> + <article class="topic concept nested3" aria-labelledby="ariaid-title32" id="known_issues_correctness__IMPALA-4513"> + <h4 class="title topictitle4" id="ariaid-title32">ABS(n) where n is the lowest bound for the int types returns negative values</h4> + <div class="body conbody"> + <p class="p"> + If the <code class="ph codeph">abs()</code> function evaluates a number that is right at the lower bound for + an integer data type, the positive result cannot be represented in the same type, and the + result is returned as a negative number. For example, <code class="ph codeph">abs(-128)</code> returns -128 + because the argument is interpreted as a <code class="ph codeph">TINYINT</code> and the return value is also + a <code class="ph codeph">TINYINT</code>. + </p> + <p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-4513"; target="_blank">IMPALA-4513</a></p> + <p class="p"><strong class="ph b">Severity:</strong> High</p> + <p class="p"><strong class="ph b">Workaround:</strong> Cast the integer value to a larger type. For example, rewrite + <code class="ph codeph">abs(<var class="keyword varname">tinyint_col</var>)</code> as <code class="ph codeph">abs(cast(<var class="keyword varname">tinyint_col</var> as smallint))</code>.</p> + </div> + </article> + + <article class="topic concept nested3" aria-labelledby="ariaid-title33" id="known_issues_correctness__IMPALA-4266"> + <h4 class="title topictitle4" id="ariaid-title33">Java udf expression returning string in group by can give incorrect results.</h4> + <div class="body conbody"> + <p class="p"> + If the <code class="ph codeph">GROUP BY</code> clause included a call to a Java UDF that returned a string value, + the UDF could return an incorrect result. + </p> + <p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-4266"; target="_blank">IMPALA-4266</a></p> + <p class="p"><strong class="ph b">Severity:</strong> High</p> + <p class="p"><strong class="ph b">Resolution:</strong> Fixed in <span class="keyword">Impala 2.8</span> and higher.</p> + <p class="p"><strong class="ph b">Workaround:</strong> Rewrite the expression to concatenate the results of the Java UDF with an + empty string call. For example, rewrite <code class="ph codeph">my_hive_udf()</code> as + <code class="ph codeph">concat(my_hive_udf(), '')</code>. + </p> + </div> + </article> + + <article class="topic concept nested3" aria-labelledby="ariaid-title34" id="known_issues_correctness__IMPALA-3084"> - <h3 class="title topictitle3" id="ariaid-title26">Incorrect assignment of NULL checking predicate through an outer join of a nested collection.</h3> + <h4 class="title topictitle4" id="ariaid-title34">Incorrect assignment of NULL checking predicate through an outer join of a nested collection.</h4> <div class="body conbody"> @@ -676,9 +849,9 @@ </article> - <article class="topic concept nested2" aria-labelledby="ariaid-title27" id="known_issues_correctness__IMPALA-3094"> + <article class="topic concept nested3" aria-labelledby="ariaid-title35" id="known_issues_correctness__IMPALA-3094"> - <h3 class="title topictitle3" id="ariaid-title27">Incorrect result due to constant evaluation in query with outer join</h3> + <h4 class="title topictitle4" id="ariaid-title35">Incorrect result due to constant evaluation in query with outer join</h4> <div class="body conbody"> @@ -721,9 +894,9 @@ explain SELECT 1 FROM alltypestiny a1 </article> - <article class="topic concept nested2" aria-labelledby="ariaid-title28" id="known_issues_correctness__IMPALA-3126"> + <article class="topic concept nested3" aria-labelledby="ariaid-title36" id="known_issues_correctness__IMPALA-3126"> - <h3 class="title topictitle3" id="ariaid-title28">Incorrect assignment of an inner join On-clause predicate through an outer join.</h3> + <h4 class="title topictitle4" id="ariaid-title36">Incorrect assignment of an inner join On-clause predicate through an outer join.</h4> <div class="body conbody"> @@ -899,9 +1072,9 @@ where b.int_col = c.int_col </article> - <article class="topic concept nested2" aria-labelledby="ariaid-title29" id="known_issues_correctness__IMPALA-3006"> + <article class="topic concept nested3" aria-labelledby="ariaid-title37" id="known_issues_correctness__IMPALA-3006"> - <h3 class="title topictitle3" id="ariaid-title29">Impala may use incorrect bit order with BIT_PACKED encoding</h3> + <h4 class="title topictitle4" id="ariaid-title37">Impala may use incorrect bit order with BIT_PACKED encoding</h4> <div class="body conbody"> @@ -922,9 +1095,9 @@ where b.int_col = c.int_col </article> - <article class="topic concept nested2" aria-labelledby="ariaid-title30" id="known_issues_correctness__IMPALA-3082"> + <article class="topic concept nested3" aria-labelledby="ariaid-title38" id="known_issues_correctness__IMPALA-3082"> - <h3 class="title topictitle3" id="ariaid-title30">BST between 1972 and 1995</h3> + <h4 class="title topictitle4" id="ariaid-title38">BST between 1972 and 1995</h4> <div class="body conbody"> @@ -953,9 +1126,9 @@ select </article> - <article class="topic concept nested2" aria-labelledby="ariaid-title31" id="known_issues_correctness__IMPALA-1170"> + <article class="topic concept nested3" aria-labelledby="ariaid-title39" id="known_issues_correctness__IMPALA-1170"> - <h3 class="title topictitle3" id="ariaid-title31">parse_url() returns incorrect result if @ character in URL</h3> + <h4 class="title topictitle4" id="ariaid-title39">parse_url() returns incorrect result if @ character in URL</h4> <div class="body conbody"> @@ -974,9 +1147,9 @@ select </article> - <article class="topic concept nested2" aria-labelledby="ariaid-title32" id="known_issues_correctness__IMPALA-2422"> + <article class="topic concept nested3" aria-labelledby="ariaid-title40" id="known_issues_correctness__IMPALA-2422"> - <h3 class="title topictitle3" id="ariaid-title32">% escaping does not work correctly when occurs at the end in a LIKE clause</h3> + <h4 class="title topictitle4" id="ariaid-title40">% escaping does not work correctly when occurs at the end in a LIKE clause</h4> <div class="body conbody"> @@ -993,9 +1166,9 @@ select </article> - <article class="topic concept nested2" aria-labelledby="ariaid-title33" id="known_issues_correctness__IMPALA-397"> + <article class="topic concept nested3" aria-labelledby="ariaid-title41" id="known_issues_correctness__IMPALA-397"> - <h3 class="title topictitle3" id="ariaid-title33">ORDER BY rand() does not work.</h3> + <h4 class="title topictitle4" id="ariaid-title41">ORDER BY rand() does not work.</h4> <div class="body conbody"> @@ -1012,9 +1185,9 @@ select </article> - <article class="topic concept nested2" aria-labelledby="ariaid-title34" id="known_issues_correctness__IMPALA-2643"> + <article class="topic concept nested3" aria-labelledby="ariaid-title42" id="known_issues_correctness__IMPALA-2643"> - <h3 class="title topictitle3" id="ariaid-title34">Duplicated column in inline view causes dropping null slots during scan</h3> + <h4 class="title topictitle4" id="ariaid-title42">Duplicated column in inline view causes dropping null slots during scan</h4> <div class="body conbody"> @@ -1037,11 +1210,11 @@ select </article> - <article class="topic concept nested2" aria-labelledby="ariaid-title35" id="known_issues_correctness__IMPALA-1459"> + <article class="topic concept nested3" aria-labelledby="ariaid-title43" id="known_issues_correctness__IMPALA-1459"> - <h3 class="title topictitle3" id="ariaid-title35">Incorrect assignment of predicates through an outer join in an inline view.</h3> + <h4 class="title topictitle4" id="ariaid-title43">Incorrect assignment of predicates through an outer join in an inline view.</h4> <div class="body conbody"> @@ -1060,9 +1233,9 @@ select </article> - <article class="topic concept nested2" aria-labelledby="ariaid-title36" id="known_issues_correctness__IMPALA-2603"> + <article class="topic concept nested3" aria-labelledby="ariaid-title44" id="known_issues_correctness__IMPALA-2603"> - <h3 class="title topictitle3" id="ariaid-title36">Crash: impala::Coordinator::ValidateCollectionSlots</h3> + <h4 class="title topictitle4" id="ariaid-title44">Crash: impala::Coordinator::ValidateCollectionSlots</h4> <div class="body conbody"> @@ -1079,9 +1252,9 @@ select </article> - <article class="topic concept nested2" aria-labelledby="ariaid-title37" id="known_issues_correctness__IMPALA-2665"> + <article class="topic concept nested3" aria-labelledby="ariaid-title45" id="known_issues_correctness__IMPALA-2665"> - <h3 class="title topictitle3" id="ariaid-title37">Incorrect assignment of On-clause predicate inside inline view with an outer join.</h3> + <h4 class="title topictitle4" id="ariaid-title45">Incorrect assignment of On-clause predicate inside inline view with an outer join.</h4> <div class="body conbody"> @@ -1114,9 +1287,9 @@ select </article> - <article class="topic concept nested2" aria-labelledby="ariaid-title38" id="known_issues_correctness__IMPALA-2144"> + <article class="topic concept nested3" aria-labelledby="ariaid-title46" id="known_issues_correctness__IMPALA-2144"> - <h3 class="title topictitle3" id="ariaid-title38">Wrong assignment of having clause predicate across outer join</h3> + <h4 class="title topictitle4" id="ariaid-title46">Wrong assignment of having clause predicate across outer join</h4> <div class="body conbody"> @@ -1135,9 +1308,9 @@ select </article> - <article class="topic concept nested2" aria-labelledby="ariaid-title39" id="known_issues_correctness__IMPALA-2093"> + <article class="topic concept nested3" aria-labelledby="ariaid-title47" id="known_issues_correctness__IMPALA-2093"> - <h3 class="title topictitle3" id="ariaid-title39">Wrong plan of NOT IN aggregate subquery when a constant is used in subquery predicate</h3> + <h4 class="title topictitle4" id="ariaid-title47">Wrong plan of NOT IN aggregate subquery when a constant is used in subquery predicate</h4> <div class="body conbody"> @@ -1158,9 +1331,9 @@ select </article> - <article class="topic concept nested1" aria-labelledby="known_issues_metadata__ki_metadata" id="known_issues__known_issues_metadata"> + <article class="topic concept nested2" aria-labelledby="known_issues_metadata__ki_metadata" id="known_issues_crash__known_issues_metadata"> - <h2 class="title topictitle2" id="known_issues_metadata__ki_metadata">Impala Known Issues: Metadata</h2> + <h3 class="title topictitle3" id="known_issues_metadata__ki_metadata">Impala Known Issues: Metadata</h3> <div class="body conbody"> @@ -1171,9 +1344,9 @@ select </div> - <article class="topic concept nested2" aria-labelledby="ariaid-title41" id="known_issues_metadata__IMPALA-2648"> + <article class="topic concept nested3" aria-labelledby="ariaid-title49" id="known_issues_metadata__IMPALA-2648"> - <h3 class="title topictitle3" id="ariaid-title41">Catalogd may crash when loading metadata for tables with many partitions, many columns and with incremental stats</h3> + <h4 class="title topictitle4" id="ariaid-title49">Catalogd may crash when loading metadata for tables with many partitions, many columns and with incremental stats</h4> <div class="body conbody"> @@ -1198,11 +1371,11 @@ select </article> - <article class="topic concept nested2" aria-labelledby="ariaid-title42" id="known_issues_metadata__IMPALA-1420"> + <article class="topic concept nested3" aria-labelledby="ariaid-title50" id="known_issues_metadata__IMPALA-1420"> - <h3 class="title topictitle3" id="ariaid-title42">Can't update stats manually via alter table after upgrading to <span class="keyword">Impala 2.0</span></h3> + <h4 class="title topictitle4" id="ariaid-title50">Can't update stats manually via alter table after upgrading to <span class="keyword">Impala 2.0</span></h4> <div class="body conbody"> @@ -1232,9 +1405,9 @@ select </article> - <article class="topic concept nested1" aria-labelledby="known_issues_interop__ki_interop" id="known_issues__known_issues_interop"> + <article class="topic concept nested2" aria-labelledby="known_issues_interop__ki_interop" id="known_issues_crash__known_issues_interop"> - <h2 class="title topictitle2" id="known_issues_interop__ki_interop">Impala Known Issues: Interoperability</h2> + <h3 class="title topictitle3" id="known_issues_interop__ki_interop">Impala Known Issues: Interoperability</h3> <div class="body conbody"> @@ -1247,9 +1420,9 @@ select - <article class="topic concept nested2" aria-labelledby="ariaid-title44" id="known_issues_interop__describe_formatted_avro"> + <article class="topic concept nested3" aria-labelledby="ariaid-title52" id="known_issues_interop__describe_formatted_avro"> - <h3 class="title topictitle3" id="ariaid-title44">DESCRIBE FORMATTED gives error on Avro table</h3> + <h4 class="title topictitle4" id="ariaid-title52">DESCRIBE FORMATTED gives error on Avro table</h4> <div class="body conbody"> @@ -1281,11 +1454,11 @@ ALTER TABLE table_name SET TBLPROPERTIES('EXTERNAL'='TRUE'); </article> - <article class="topic concept nested2" aria-labelledby="ariaid-title45" id="known_issues_interop__IMP-469"> + <article class="topic concept nested3" aria-labelledby="ariaid-title53" id="known_issues_interop__IMP-469"> - <h3 class="title topictitle3" id="ariaid-title45">Deviation from Hive behavior: Impala does not do implicit casts between string and numeric and boolean types.</h3> + <h4 class="title topictitle4" id="ariaid-title53">Deviation from Hive behavior: Impala does not do implicit casts between string and numeric and boolean types.</h4> <div class="body conbody"> @@ -1301,11 +1474,11 @@ ALTER TABLE table_name SET TBLPROPERTIES('EXTERNAL'='TRUE'); </article> - <article class="topic concept nested2" aria-labelledby="ariaid-title46" id="known_issues_interop__IMP-175"> + <article class="topic concept nested3" aria-labelledby="ariaid-title54" id="known_issues_interop__IMP-175"> - <h3 class="title topictitle3" id="ariaid-title46">Deviation from Hive behavior: Out of range values float/double values are returned as maximum allowed value of type (Hive returns NULL)</h3> + <h4 class="title topictitle4" id="ariaid-title54">Deviation from Hive behavior: Out of range values float/double values are returned as maximum allowed value of type (Hive returns NULL)</h4> <div class="body conbody"> @@ -1322,11 +1495,11 @@ ALTER TABLE table_name SET TBLPROPERTIES('EXTERNAL'='TRUE'); </article> - <article class="topic concept nested2" aria-labelledby="ariaid-title47" id="known_issues_interop__flume_writeformat_text"> + <article class="topic concept nested3" aria-labelledby="ariaid-title55" id="known_issues_interop__flume_writeformat_text"> - <h3 class="title topictitle3" id="ariaid-title47">Configuration needed for Flume to be compatible with Impala</h3> + <h4 class="title topictitle4" id="ariaid-title55">Configuration needed for Flume to be compatible with Impala</h4> <div class="body conbody"> @@ -1345,11 +1518,11 @@ ALTER TABLE table_name SET TBLPROPERTIES('EXTERNAL'='TRUE'); </article> - <article class="topic concept nested2" aria-labelledby="ariaid-title48" id="known_issues_interop__IMPALA-635"> + <article class="topic concept nested3" aria-labelledby="ariaid-title56" id="known_issues_interop__IMPALA-635"> - <h3 class="title topictitle3" id="ariaid-title48">Avro Scanner fails to parse some schemas</h3> + <h4 class="title topictitle4" id="ariaid-title56">Avro Scanner fails to parse some schemas</h4> <div class="body conbody"> @@ -1375,11 +1548,11 @@ ALTER TABLE table_name SET TBLPROPERTIES('EXTERNAL'='TRUE'); </article> - <article class="topic concept nested2" aria-labelledby="ariaid-title49" id="known_issues_interop__IMPALA-1024"> + <article class="topic concept nested3" aria-labelledby="ariaid-title57" id="known_issues_interop__IMPALA-1024"> - <h3 class="title topictitle3" id="ariaid-title49">Impala BE cannot parse Avro schema that contains a trailing semi-colon</h3> + <h4 class="title topictitle4" id="ariaid-title57">Impala BE cannot parse Avro schema that contains a trailing semi-colon</h4> <div class="body conbody"> @@ -1399,11 +1572,11 @@ ALTER TABLE table_name SET TBLPROPERTIES('EXTERNAL'='TRUE'); </article> - <article class="topic concept nested2" aria-labelledby="ariaid-title50" id="known_issues_interop__IMPALA-2154"> + <article class="topic concept nested3" aria-labelledby="ariaid-title58" id="known_issues_interop__IMPALA-2154"> - <h3 class="title topictitle3" id="ariaid-title50">Fix decompressor to allow parsing gzips with multiple streams</h3> + <h4 class="title topictitle4" id="ariaid-title58">Fix decompressor to allow parsing gzips with multiple streams</h4> <div class="body conbody"> @@ -1426,11 +1599,11 @@ ALTER TABLE table_name SET TBLPROPERTIES('EXTERNAL'='TRUE'); </article> - <article class="topic concept nested2" aria-labelledby="ariaid-title51" id="known_issues_interop__IMPALA-1578"> + <article class="topic concept nested3" aria-labelledby="ariaid-title59" id="known_issues_interop__IMPALA-1578"> - <h3 class="title topictitle3" id="ariaid-title51">Impala incorrectly handles text data when the new line character \n\r is split between different HDFS block</h3> + <h4 class="title topictitle4" id="ariaid-title59">Impala incorrectly handles text data when the new line character \n\r is split between different HDFS block</h4> <div class="body conbody"> @@ -1453,11 +1626,11 @@ ALTER TABLE table_name SET TBLPROPERTIES('EXTERNAL'='TRUE'); </article> - <article class="topic concept nested2" aria-labelledby="ariaid-title52" id="known_issues_interop__IMPALA-1862"> + <article class="topic concept nested3" aria-labelledby="ariaid-title60" id="known_issues_interop__IMPALA-1862"> - <h3 class="title topictitle3" id="ariaid-title52">Invalid bool value not reported as a scanner error</h3> + <h4 class="title topictitle4" id="ariaid-title60">Invalid bool value not reported as a scanner error</h4> <div class="body conbody"> @@ -1475,11 +1648,11 @@ ALTER TABLE table_name SET TBLPROPERTIES('EXTERNAL'='TRUE'); </article> - <article class="topic concept nested2" aria-labelledby="ariaid-title53" id="known_issues_interop__IMPALA-1652"> + <article class="topic concept nested3" aria-labelledby="ariaid-title61" id="known_issues_interop__IMPALA-1652"> - <h3 class="title topictitle3" id="ariaid-title53">Incorrect results with basic predicate on CHAR typed column.</h3> + <h4 class="title topictitle4" id="ariaid-title61">Incorrect results with basic predicate on CHAR typed column.</h4> <div class="body conbody"> @@ -1503,9 +1676,9 @@ ALTER TABLE table_name SET TBLPROPERTIES('EXTERNAL'='TRUE'); </article> - <article class="topic concept nested1" aria-labelledby="ariaid-title54" id="known_issues__known_issues_limitations"> + <article class="topic concept nested2" aria-labelledby="ariaid-title62" id="known_issues_crash__known_issues_limitations"> - <h2 class="title topictitle2" id="ariaid-title54">Impala Known Issues: Limitations</h2> + <h3 class="title topictitle3" id="ariaid-title62">Impala Known Issues: Limitations</h3> <div class="body conbody"> @@ -1516,11 +1689,26 @@ ALTER TABLE table_name SET TBLPROPERTIES('EXTERNAL'='TRUE'); </div> - <article class="topic concept nested2" aria-labelledby="ariaid-title55" id="known_issues_limitations__IMPALA-77"> + <article class="topic concept nested3" aria-labelledby="ariaid-title63" id="known_issues_limitations__IMPALA-4551"> + <h4 class="title topictitle4" id="ariaid-title63">Set limits on size of expression trees</h4> + <div class="body conbody"> + <p class="p"> + Very deeply nested expressions within queries can exceed internal Impala limits, + leading to excessive memory usage. + </p> + <p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-4551"; target="_blank">IMPALA-4551</a></p> + <p class="p"><strong class="ph b">Severity:</strong> High</p> + <p class="p"><strong class="ph b">Resolution:</strong> </p> + <p class="p"><strong class="ph b">Workaround:</strong> Avoid queries with extremely large expression trees. Setting the query option + <code class="ph codeph">disable_codegen=true</code> may reduce the impact, at a cost of longer query runtime.</p> + </div> + </article> + + <article class="topic concept nested3" aria-labelledby="ariaid-title64" id="known_issues_limitations__IMPALA-77"> - <h3 class="title topictitle3" id="ariaid-title55">Impala does not support running on clusters with federated namespaces</h3> + <h4 class="title topictitle4" id="ariaid-title64">Impala does not support running on clusters with federated namespaces</h4> <div class="body conbody"> @@ -1547,9 +1735,9 @@ ALTER TABLE table_name SET TBLPROPERTIES('EXTERNAL'='TRUE'); </article> - <article class="topic concept nested1" aria-labelledby="ariaid-title56" id="known_issues__known_issues_misc"> + <article class="topic concept nested2" aria-labelledby="ariaid-title65" id="known_issues_crash__known_issues_misc"> - <h2 class="title topictitle2" id="ariaid-title56">Impala Known Issues: Miscellaneous / Older Issues</h2> + <h3 class="title topictitle3" id="ariaid-title65">Impala Known Issues: Miscellaneous / Older Issues</h3> <div class="body conbody"> @@ -1559,11 +1747,11 @@ ALTER TABLE table_name SET TBLPROPERTIES('EXTERNAL'='TRUE'); </div> - <article class="topic concept nested2" aria-labelledby="ariaid-title57" id="known_issues_misc__IMPALA-2005"> + <article class="topic concept nested3" aria-labelledby="ariaid-title66" id="known_issues_misc__IMPALA-2005"> - <h3 class="title topictitle3" id="ariaid-title57">A failed CTAS does not drop the table if the insert fails.</h3> + <h4 class="title topictitle4" id="ariaid-title66">A failed CTAS does not drop the table if the insert fails.</h4> <div class="body conbody"> @@ -1584,11 +1772,11 @@ ALTER TABLE table_name SET TBLPROPERTIES('EXTERNAL'='TRUE'); </article> - <article class="topic concept nested2" aria-labelledby="ariaid-title58" id="known_issues_misc__IMPALA-1821"> + <article class="topic concept nested3" aria-labelledby="ariaid-title67" id="known_issues_misc__IMPALA-1821"> - <h3 class="title topictitle3" id="ariaid-title58">Casting scenarios with invalid/inconsistent results</h3> + <h4 class="title topictitle4" id="ariaid-title67">Casting scenarios with invalid/inconsistent results</h4> <div class="body conbody"> @@ -1608,11 +1796,11 @@ ALTER TABLE table_name SET TBLPROPERTIES('EXTERNAL'='TRUE'); </article> - <article class="topic concept nested2" aria-labelledby="ariaid-title59" id="known_issues_misc__IMPALA-1619"> + <article class="topic concept nested3" aria-labelledby="ariaid-title68" id="known_issues_misc__IMPALA-1619"> - <h3 class="title topictitle3" id="ariaid-title59">Support individual memory allocations larger than 1 GB</h3> + <h4 class="title topictitle4" id="ariaid-title68">Support individual memory allocations larger than 1 GB</h4> <div class="body conbody"> @@ -1632,11 +1820,11 @@ ALTER TABLE table_name SET TBLPROPERTIES('EXTERNAL'='TRUE'); </article> - <article class="topic concept nested2" aria-labelledby="ariaid-title60" id="known_issues_misc__IMPALA-941"> + <article class="topic concept nested3" aria-labelledby="ariaid-title69" id="known_issues_misc__IMPALA-941"> - <h3 class="title topictitle3" id="ariaid-title60">Impala Parser issue when using fully qualified table names that start with a number.</h3> + <h4 class="title topictitle4" id="ariaid-title69">Impala Parser issue when using fully qualified table names that start with a number.</h4> <div class="body conbody"> @@ -1657,11 +1845,11 @@ ALTER TABLE table_name SET TBLPROPERTIES('EXTERNAL'='TRUE'); </article> - <article class="topic concept nested2" aria-labelledby="ariaid-title61" id="known_issues_misc__IMPALA-532"> + <article class="topic concept nested3" aria-labelledby="ariaid-title70" id="known_issues_misc__IMPALA-532"> - <h3 class="title topictitle3" id="ariaid-title61">Impala should tolerate bad locale settings</h3> + <h4 class="title topictitle4" id="ariaid-title70">Impala should tolerate bad locale settings</h4> <div class="body conbody"> @@ -1686,11 +1874,11 @@ ALTER TABLE table_name SET TBLPROPERTIES('EXTERNAL'='TRUE'); </article> - <article class="topic concept nested2" aria-labelledby="ariaid-title62" id="known_issues_misc__IMP-1203"> + <article class="topic concept nested3" aria-labelledby="ariaid-title71" id="known_issues_misc__IMP-1203"> - <h3 class="title topictitle3" id="ariaid-title62">Log Level 3 Not Recommended for Impala</h3> + <h4 class="title topictitle4" id="ariaid-title71">Log Level 3 Not Recommended for Impala</h4> <div class="body conbody"> @@ -1709,4 +1897,5 @@ ALTER TABLE table_name SET TBLPROPERTIES('EXTERNAL'='TRUE'); </article> +</article> </article></main></body></html> \ No newline at end of file
http://git-wip-us.apache.org/repos/asf/incubator-impala/blob/ae2f8d03/docs/build/html/topics/impala_kudu.html ---------------------------------------------------------------------- diff --git a/docs/build/html/topics/impala_kudu.html b/docs/build/html/topics/impala_kudu.html index 78f6534..1ede7b6 100644 --- a/docs/build/html/topics/impala_kudu.html +++ b/docs/build/html/topics/impala_kudu.html @@ -916,9 +916,71 @@ partition by hash (school) partitions 10, <div class="body conbody"> + <div class="p"> + In <span class="keyword">Impala 2.9</span> and higher, you can include <code class="ph codeph">TIMESTAMP</code> + columns in Kudu tables, instead of representing the date and time as a <code class="ph codeph">BIGINT</code> + value. The behavior of <code class="ph codeph">TIMESTAMP</code> for Kudu tables has some special considerations: + + <ul class="ul"> + <li class="li"> + <p class="p"> + Any nanoseconds in the original 96-bit value produced by Impala are not stored, because + Kudu represents date/time columns using 64-bit values. The nanosecond portion of the value + is rounded, not truncated. Therefore, a <code class="ph codeph">TIMESTAMP</code> value + that you store in a Kudu table might not be bit-for-bit identical to the value returned by a query. + </p> + </li> + <li class="li"> + <p class="p"> + The conversion between the Impala 96-bit representation and the Kudu 64-bit representation + introduces some performance overhead when reading or writing <code class="ph codeph">TIMESTAMP</code> + columns. You can minimize the overhead during writes by performing inserts through the + Kudu API. Because the overhead during reads applies to each query, you might continue to + use a <code class="ph codeph">BIGINT</code> column to represent date/time values in performance-critical + applications. + </p> + </li> + <li class="li"> + <p class="p"> + The Impala <code class="ph codeph">TIMESTAMP</code> type has a narrower range for years than the underlying + Kudu data type. Impala can represent years 1400-9999. If year values outside this range + are written to a Kudu table by a non-Impala client, Impala returns <code class="ph codeph">NULL</code> + by default when reading those <code class="ph codeph">TIMESTAMP</code> values during a query. Or, if the + <code class="ph codeph">ABORT_ON_ERROR</code> query option is enabled, the query fails when it encounters + a value with an out-of-range year. + </p> + </li> + </ul> + </div> + +<pre class="pre codeblock"><code>--- Make a table representing a date/time value as TIMESTAMP. +-- The strings representing the partition bounds are automatically +-- cast to TIMESTAMP values. +create table native_timestamp(id bigint, when_exactly timestamp, event string, primary key (id, when_exactly)) + partition by hash (id) partitions 20, + range (when_exactly) + ( + partition '2015-01-01' <= values < '2016-01-01', + partition '2016-01-01' <= values < '2017-01-01', + partition '2017-01-01' <= values < '2018-01-01' + ) + stored as kudu; + +insert into native_timestamp values (12345, now(), 'Working on doc examples'); + +select * from native_timestamp; ++-------+-------------------------------+-------------------------+ +| id | when_exactly | event | ++-------+-------------------------------+-------------------------+ +| 12345 | 2017-05-31 16:27:42.667542000 | Working on doc examples | ++-------+-------------------------------+-------------------------+ + +</code></pre> + <p class="p"> - Because currently a Kudu table cannot have a column with the Impala - <code class="ph codeph">TIMESTAMP</code> type, expect to store date/time information as the number + Because Kudu tables have some performance overhead to convert <code class="ph codeph">TIMESTAMP</code> + columns to the Impala 96-bit internal representation, for performance-critical + applications you might store date/time information as the number of seconds, milliseconds, or microseconds since the Unix epoch date of January 1, 1970. Specify the column as <code class="ph codeph">BIGINT</code> in the Impala <code class="ph codeph">CREATE TABLE</code> statement, corresponding to an 8-byte integer (an @@ -966,14 +1028,14 @@ select unix_timestamp('2017-01-01'); -- Construct 1 range partition and 20 associated hash partitions for each year. -- Use date/time conversion functions to express the ranges as human-readable dates. create table time_series(id bigint, when_exactly bigint, event string, primary key (id, when_exactly)) - partition by hash (id) partitions 20, - range (when_exactly) - ( - partition unix_timestamp('2015-01-01') <= values < unix_timestamp('2016-01-01'), - partition unix_timestamp('2016-01-01') <= values < unix_timestamp('2017-01-01'), - partition unix_timestamp('2017-01-01') <= values < unix_timestamp('2018-01-01') - ) - stored as kudu; + partition by hash (id) partitions 20, + range (when_exactly) + ( + partition unix_timestamp('2015-01-01') <= values < unix_timestamp('2016-01-01'), + partition unix_timestamp('2016-01-01') <= values < unix_timestamp('2017-01-01'), + partition unix_timestamp('2017-01-01') <= values < unix_timestamp('2018-01-01') + ) + stored as kudu; -- On insert, we can transform a human-readable date/time into a numeric value. insert into time_series values (12345, unix_timestamp('2017-01-25 23:24:56'), 'Working on doc examples'); @@ -1270,6 +1332,18 @@ kudu.table_name | impala::some_database.table_name_demo <li class="li"> <p class="p"> + Kerberos authentication. See <a class="xref" href="https://kudu.apache.org/docs/security.html"; target="_blank">Kudu Security</a> for details. + </p> + </li> + + <li class="li"> + <p class="p"> + TLS encryption. See <a class="xref" href="https://kudu.apache.org/docs/security.html"; target="_blank">Kudu Security</a> for details. + </p> + </li> + + <li class="li"> + <p class="p"> Lineage tracking. </p> </li> http://git-wip-us.apache.org/repos/asf/incubator-impala/blob/ae2f8d03/docs/build/html/topics/impala_literals.html ---------------------------------------------------------------------- diff --git a/docs/build/html/topics/impala_literals.html b/docs/build/html/topics/impala_literals.html index cd16389..8f94511 100644 --- a/docs/build/html/topics/impala_literals.html +++ b/docs/build/html/topics/impala_literals.html @@ -295,7 +295,7 @@ select case bool_col when true then 'yes' when false 'no' else 'null' end from t <p class="p"> You can also use <code class="ph codeph">INTERVAL</code> expressions to add or subtract from timestamp literal values, - such as <code class="ph codeph">'1966-07-30' + INTERVAL 5 YEARS + INTERVAL 3 DAYS</code>. See + such as <code class="ph codeph">CAST('1966-07-30' AS TIMESTAMP) + INTERVAL 5 YEARS + INTERVAL 3 DAYS</code>. See <a class="xref" href="impala_timestamp.html#timestamp">TIMESTAMP Data Type</a> for details. </p> http://git-wip-us.apache.org/repos/asf/incubator-impala/blob/ae2f8d03/docs/build/html/topics/impala_load_data.html ---------------------------------------------------------------------- diff --git a/docs/build/html/topics/impala_load_data.html b/docs/build/html/topics/impala_load_data.html index e49408b..b6ae3ec 100644 --- a/docs/build/html/topics/impala_load_data.html +++ b/docs/build/html/topics/impala_load_data.html @@ -258,6 +258,22 @@ Returned 1 row(s) in 0.62s</code></pre> <p class="p">See <a class="xref" href="impala_s3.html#s3">Using Impala with the Amazon S3 Filesystem</a> for details about reading and writing S3 data with Impala.</p> <p class="p"> + <strong class="ph b">ADLS considerations:</strong> + </p> + <p class="p"> + In <span class="keyword">Impala 2.9</span> and higher, the Impala DML statements (<code class="ph codeph">INSERT</code>, <code class="ph codeph">LOAD DATA</code>, + and <code class="ph codeph">CREATE TABLE AS SELECT</code>) can write data into a table or partition that resides in the + Azure Data Lake Store (ADLS). + The syntax of the DML statements is the same as for any other tables, because the ADLS location for tables and + partitions is specified by an <code class="ph codeph">adl://</code> prefix in the + <code class="ph codeph">LOCATION</code> attribute of + <code class="ph codeph">CREATE TABLE</code> or <code class="ph codeph">ALTER TABLE</code> statements. + If you bring data into ADLS using the normal ADLS transfer mechanisms instead of Impala DML statements, + issue a <code class="ph codeph">REFRESH</code> statement for the table before using Impala to query the ADLS data. + </p> + <p class="p">See <a class="xref" href="impala_adls.html#adls">Using Impala with the Azure Data Lake Store (ADLS)</a> for details about reading and writing ADLS data with Impala.</p> + + <p class="p"> <strong class="ph b">Cancellation:</strong> Cannot be cancelled. </p> http://git-wip-us.apache.org/repos/asf/incubator-impala/blob/ae2f8d03/docs/build/html/topics/impala_logging.html ---------------------------------------------------------------------- diff --git a/docs/build/html/topics/impala_logging.html b/docs/build/html/topics/impala_logging.html index 049f370..1882468 100644 --- a/docs/build/html/topics/impala_logging.html +++ b/docs/build/html/topics/impala_logging.html @@ -44,6 +44,14 @@ </p> <p class="p"> + In <span class="keyword">Impala 2.9</span> and higher, you can control how many + audit event log files are kept on each host through the + <code class="ph codeph">--max_audit_event_log_files</code> startup option for the + <span class="keyword cmdname">impalad</span> daemon, similar to the <code class="ph codeph">--max_log_files</code> + option for regular log files. + </p> + + <p class="p"> The lineage feature introduced in Impala 2.2.0 produces a separate lineage log file when enabled. See <a class="xref" href="impala_lineage.html#lineage">Viewing Lineage Information for Impala Data</a> for details. </p> @@ -132,7 +140,7 @@ </li> <li class="li"> - The <code class="ph codeph">-logbuflevel</code> startup flag for the <span class="keyword cmdname">impalad</span> daemon specifies how + The <code class="ph codeph">--logbuflevel</code> startup flag for the <span class="keyword cmdname">impalad</span> daemon specifies how often the log information is written to disk. The default is 0, meaning that the log is immediately flushed to disk when Impala outputs an important messages such as a warning or an error, but less important messages such as informational ones are buffered in memory rather than being flushed to disk @@ -177,7 +185,7 @@ </p> <p class="p"> - In Impala 2.2 and higher, the <code class="ph codeph">-max_log_files</code> configuration option specifies how many log + In Impala 2.2 and higher, the <code class="ph codeph">--max_log_files</code> configuration option specifies how many log files to keep at each severity level. You can specify an appropriate setting for each Impala-related daemon (<span class="keyword cmdname">impalad</span>, <span class="keyword cmdname">statestored</span>, and <span class="keyword cmdname">catalogd</span>). The default value is 10, meaning that Impala preserves the latest 10 log files for each severity level http://git-wip-us.apache.org/repos/asf/incubator-impala/blob/ae2f8d03/docs/build/html/topics/impala_map.html ---------------------------------------------------------------------- diff --git a/docs/build/html/topics/impala_map.html b/docs/build/html/topics/impala_map.html index 31d91f0..96cd2e8 100644 --- a/docs/build/html/topics/impala_map.html +++ b/docs/build/html/topics/impala_map.html @@ -102,7 +102,7 @@ type ::= <var class="keyword varname">primitive_type</var> | <var class="keyword </p> </li> <li class="li"> - <p class="p" id="map__d6e2889"> + <p class="p" id="map__d6e3003"> The maximum length of the column definition for any complex type, including declarations for any nested types, is 4000 characters. </p> @@ -119,7 +119,7 @@ type ::= <var class="keyword varname">primitive_type</var> | <var class="keyword <strong class="ph b">Kudu considerations:</strong> </p> <p class="p"> - Currently, the data types <code class="ph codeph">DECIMAL</code>, <code class="ph codeph">TIMESTAMP</code>, <code class="ph codeph">CHAR</code>, <code class="ph codeph">VARCHAR</code>, + Currently, the data types <code class="ph codeph">DECIMAL</code>, <code class="ph codeph">CHAR</code>, <code class="ph codeph">VARCHAR</code>, <code class="ph codeph">ARRAY</code>, <code class="ph codeph">MAP</code>, and <code class="ph codeph">STRUCT</code> cannot be used with Kudu tables. </p> http://git-wip-us.apache.org/repos/asf/incubator-impala/blob/ae2f8d03/docs/build/html/topics/impala_math_functions.html ---------------------------------------------------------------------- diff --git a/docs/build/html/topics/impala_math_functions.html b/docs/build/html/topics/impala_math_functions.html index 318dd56..431e6c3 100644 --- a/docs/build/html/topics/impala_math_functions.html +++ b/docs/build/html/topics/impala_math_functions.html @@ -607,8 +607,8 @@ select fmod(9.9,3.3); <p class="p"> Infinity and NaN can be specified in text data files as <code class="ph codeph">inf</code> and <code class="ph codeph">nan</code> respectively, and Impala interprets them as these special values. They can also be produced by certain - arithmetic expressions; for example, <code class="ph codeph">pow(-1, 0.5)</code> returns <code class="ph codeph">Infinity</code> and - <code class="ph codeph">1/0</code> returns <code class="ph codeph">NaN</code>. Or you can cast the literal values, such as <code class="ph codeph">CAST('nan' AS + arithmetic expressions; for example, <code class="ph codeph">1/0</code> returns <code class="ph codeph">Infinity</code> and + <code class="ph codeph">pow(-1, 0.5)</code> returns <code class="ph codeph">NaN</code>. Or you can cast the literal values, such as <code class="ph codeph">CAST('nan' AS DOUBLE)</code> or <code class="ph codeph">CAST('inf' AS DOUBLE)</code>. </p> </dd> @@ -634,8 +634,8 @@ select fmod(9.9,3.3); <p class="p"> Infinity and NaN can be specified in text data files as <code class="ph codeph">inf</code> and <code class="ph codeph">nan</code> respectively, and Impala interprets them as these special values. They can also be produced by certain - arithmetic expressions; for example, <code class="ph codeph">pow(-1, 0.5)</code> returns <code class="ph codeph">Infinity</code> and - <code class="ph codeph">1/0</code> returns <code class="ph codeph">NaN</code>. Or you can cast the literal values, such as <code class="ph codeph">CAST('nan' AS + arithmetic expressions; for example, <code class="ph codeph">1/0</code> returns <code class="ph codeph">Infinity</code> and + <code class="ph codeph">pow(-1, 0.5)</code> returns <code class="ph codeph">NaN</code>. Or you can cast the literal values, such as <code class="ph codeph">CAST('nan' AS DOUBLE)</code> or <code class="ph codeph">CAST('inf' AS DOUBLE)</code>. </p> </dd> http://git-wip-us.apache.org/repos/asf/incubator-impala/blob/ae2f8d03/docs/build/html/topics/impala_new_features.html ---------------------------------------------------------------------- diff --git a/docs/build/html/topics/impala_new_features.html b/docs/build/html/topics/impala_new_features.html index 4f8af12..7413a22 100644 --- a/docs/build/html/topics/impala_new_features.html +++ b/docs/build/html/topics/impala_new_features.html @@ -18,9 +18,50 @@ - <nav role="navigation" class="related-links"><div class="familylinks"><div class="parentlink"><strong>Parent topic:</strong> <a class="link" href="../topics/impala_release_notes.html">Impala Release Notes</a></div></div></nav><article class="topic concept nested1" aria-labelledby="ariaid-title2" id="new_features__new_features_280"> + <nav role="navigation" class="related-links"><div class="familylinks"><div class="parentlink"><strong>Parent topic:</strong> <a class="link" href="../topics/impala_release_notes.html">Impala Release Notes</a></div></div></nav><article class="topic concept nested1" aria-labelledby="ariaid-title2" id="new_features__new_features_290"> - <h2 class="title topictitle2" id="ariaid-title2">New Features in <span class="keyword">Impala 2.8</span></h2> + <h2 class="title topictitle2" id="ariaid-title2">New Features in <span class="keyword">Impala 2.9</span></h2> + + <div class="body conbody"> + + <p class="p"> + For the full list of issues closed in this release, including the issues + marked as <span class="q">"new features"</span>, see the + <a class="xref" href="https://impala.incubator.apache.org/docs/changelog-2.9.html"; target="_blank">changelog for <span class="keyword">Impala 2.9</span></a>. + </p> + + <p class="p"> + The following are some of the most significant new features in this release: + </p> + + <ul class="ul" id="new_features_290__feature_list"> + <li class="li"> + <p class="p"> + A new function, <code class="ph codeph">replace()</code>, which is faster than + <code class="ph codeph">regexp_replace()</code> for simple string substitutions. + See <a class="xref" href="impala_string_functions.html">Impala String Functions</a> for details. + </p> + </li> + <li class="li"> + <p class="p"> + Startup flags for the <span class="keyword cmdname">impalad</span> daemon, <code class="ph codeph">is_executor</code> + and <code class="ph codeph">is_coordinator</code>, let you divide the work on a large, busy cluster + between a small number of hosts acting as query coordinators, and a larger number of + hosts acting as query executors. By default, each host can act in both roles, + potentially introducing bottlenecks during heavily concurrent workloads. + See <a class="xref" href="impala_scalability.html">Scalability Considerations for Impala</a> for details. + </p> + </li> + </ul> + + </div> + </article> + + + + <article class="topic concept nested1" aria-labelledby="ariaid-title3" id="new_features__new_features_280"> + + <h2 class="title topictitle2" id="ariaid-title3">New Features in <span class="keyword">Impala 2.8</span></h2> <div class="body conbody"> @@ -105,14 +146,6 @@ </li> <li class="li"> <p class="p"> - A new hint, <code class="ph codeph">SORTBY(<var class="keyword varname">cols</var>)</code>, - allows Impala <code class="ph codeph">INSERT</code> operations on a Parquet table - to produce optimized output files with better compressibility - and a more compact range of min/max values within each data file. - </p> - </li> - <li class="li"> - <p class="p"> The new configuration setting <code class="ph codeph">inc_stats_size_limit_bytes</code> lets you reduce the load on the catalog server when running the <code class="ph codeph">COMPUTE INCREMENTAL STATS</code> statement for very large tables. @@ -397,9 +430,9 @@ - <article class="topic concept nested1" aria-labelledby="ariaid-title3" id="new_features__new_features_270"> + <article class="topic concept nested1" aria-labelledby="ariaid-title4" id="new_features__new_features_270"> - <h2 class="title topictitle2" id="ariaid-title3">New Features in <span class="keyword">Impala 2.7</span></h2> + <h2 class="title topictitle2" id="ariaid-title4">New Features in <span class="keyword">Impala 2.7</span></h2> <div class="body conbody"> @@ -518,9 +551,9 @@ </article> - <article class="topic concept nested1" aria-labelledby="ariaid-title4" id="new_features__new_features_260"> + <article class="topic concept nested1" aria-labelledby="ariaid-title5" id="new_features__new_features_260"> - <h2 class="title topictitle2" id="ariaid-title4">New Features in <span class="keyword">Impala 2.6</span></h2> + <h2 class="title topictitle2" id="ariaid-title5">New Features in <span class="keyword">Impala 2.6</span></h2> <div class="body conbody"> @@ -838,9 +871,9 @@ - <article class="topic concept nested1" aria-labelledby="ariaid-title5" id="new_features__new_features_250"> + <article class="topic concept nested1" aria-labelledby="ariaid-title6" id="new_features__new_features_250"> - <h2 class="title topictitle2" id="ariaid-title5">New Features in <span class="keyword">Impala 2.5</span></h2> + <h2 class="title topictitle2" id="ariaid-title6">New Features in <span class="keyword">Impala 2.5</span></h2> <div class="body conbody"> @@ -1244,9 +1277,9 @@ - <article class="topic concept nested1" aria-labelledby="ariaid-title6" id="new_features__new_features_240"> + <article class="topic concept nested1" aria-labelledby="ariaid-title7" id="new_features__new_features_240"> - <h2 class="title topictitle2" id="ariaid-title6">New Features in <span class="keyword">Impala 2.4</span></h2> + <h2 class="title topictitle2" id="ariaid-title7">New Features in <span class="keyword">Impala 2.4</span></h2> <div class="body conbody"> @@ -1266,9 +1299,9 @@ - <article class="topic concept nested1" aria-labelledby="ariaid-title7" id="new_features__new_features_230"> + <article class="topic concept nested1" aria-labelledby="ariaid-title8" id="new_features__new_features_230"> - <h2 class="title topictitle2" id="ariaid-title7">New Features in <span class="keyword">Impala 2.3</span></h2> + <h2 class="title topictitle2" id="ariaid-title8">New Features in <span class="keyword">Impala 2.3</span></h2> <div class="body conbody"> @@ -1637,9 +1670,9 @@ - <article class="topic concept nested1" aria-labelledby="ariaid-title8" id="new_features__new_features_220"> + <article class="topic concept nested1" aria-labelledby="ariaid-title9" id="new_features__new_features_220"> - <h2 class="title topictitle2" id="ariaid-title8">New Features in <span class="keyword">Impala 2.8</span></h2> + <h2 class="title topictitle2" id="ariaid-title9">New Features in <span class="keyword">Impala 2.8</span></h2> <div class="body conbody"> @@ -1883,9 +1916,9 @@ - <article class="topic concept nested1" aria-labelledby="ariaid-title9" id="new_features__new_features_210"> + <article class="topic concept nested1" aria-labelledby="ariaid-title10" id="new_features__new_features_210"> - <h2 class="title topictitle2" id="ariaid-title9">New Features in <span class="keyword">Impala 2.1</span></h2> + <h2 class="title topictitle2" id="ariaid-title10">New Features in <span class="keyword">Impala 2.1</span></h2> <div class="body conbody"> @@ -1939,9 +1972,9 @@ - <article class="topic concept nested1" aria-labelledby="ariaid-title10" id="new_features__new_features_200"> + <article class="topic concept nested1" aria-labelledby="ariaid-title11" id="new_features__new_features_200"> - <h2 class="title topictitle2" id="ariaid-title10">New Features in <span class="keyword">Impala 2.0</span></h2> + <h2 class="title topictitle2" id="ariaid-title11">New Features in <span class="keyword">Impala 2.0</span></h2> <div class="body conbody"> @@ -2250,9 +2283,9 @@ </article> - <article class="topic concept nested1" aria-labelledby="ariaid-title11" id="new_features__new_features_140"> + <article class="topic concept nested1" aria-labelledby="ariaid-title12" id="new_features__new_features_140"> - <h2 class="title topictitle2" id="ariaid-title11">New Features in <span class="keyword">Impala 1.4</span></h2> + <h2 class="title topictitle2" id="ariaid-title12">New Features in <span class="keyword">Impala 1.4</span></h2> <div class="body conbody"> @@ -2496,9 +2529,9 @@ </article> - <article class="topic concept nested1" aria-labelledby="ariaid-title12" id="new_features__new_features_132"> + <article class="topic concept nested1" aria-labelledby="ariaid-title13" id="new_features__new_features_132"> - <h2 class="title topictitle2" id="ariaid-title12">New Features in <span class="keyword">Impala 1.3.2</span></h2> + <h2 class="title topictitle2" id="ariaid-title13">New Features in <span class="keyword">Impala 1.3.2</span></h2> <div class="body conbody"> @@ -2511,9 +2544,9 @@ </article> - <article class="topic concept nested1" aria-labelledby="ariaid-title13" id="new_features__new_features_131"> + <article class="topic concept nested1" aria-labelledby="ariaid-title14" id="new_features__new_features_131"> - <h2 class="title topictitle2" id="ariaid-title13">New Features in Impala 1.3.1</h2> + <h2 class="title topictitle2" id="ariaid-title14">New Features in Impala 1.3.1</h2> <div class="body conbody"> @@ -2565,9 +2598,9 @@ </article> - <article class="topic concept nested1" aria-labelledby="ariaid-title14" id="new_features__new_features_130"> + <article class="topic concept nested1" aria-labelledby="ariaid-title15" id="new_features__new_features_130"> - <h2 class="title topictitle2" id="ariaid-title14">New Features in <span class="keyword">Impala 1.3</span></h2> + <h2 class="title topictitle2" id="ariaid-title15">New Features in <span class="keyword">Impala 1.3</span></h2> <div class="body conbody"> @@ -2689,9 +2722,9 @@ </article> - <article class="topic concept nested1" aria-labelledby="ariaid-title15" id="new_features__new_features_124"> + <article class="topic concept nested1" aria-labelledby="ariaid-title16" id="new_features__new_features_124"> - <h2 class="title topictitle2" id="ariaid-title15">New Features in Impala 1.2.4</h2> + <h2 class="title topictitle2" id="ariaid-title16">New Features in Impala 1.2.4</h2> <div class="body conbody"> @@ -2763,9 +2796,9 @@ </article> - <article class="topic concept nested1" aria-labelledby="ariaid-title16" id="new_features__new_features_123"> + <article class="topic concept nested1" aria-labelledby="ariaid-title17" id="new_features__new_features_123"> - <h2 class="title topictitle2" id="ariaid-title16">New Features in Impala 1.2.3</h2> + <h2 class="title topictitle2" id="ariaid-title17">New Features in Impala 1.2.3</h2> <div class="body conbody"> @@ -2780,9 +2813,9 @@ </article> - <article class="topic concept nested1" aria-labelledby="ariaid-title17" id="new_features__new_features_122"> + <article class="topic concept nested1" aria-labelledby="ariaid-title18" id="new_features__new_features_122"> - <h2 class="title topictitle2" id="ariaid-title17">New Features in Impala 1.2.2</h2> + <h2 class="title topictitle2" id="ariaid-title18">New Features in Impala 1.2.2</h2> <div class="body conbody"> @@ -2911,9 +2944,9 @@ </article> - <article class="topic concept nested1" aria-labelledby="ariaid-title18" id="new_features__new_features_121"> + <article class="topic concept nested1" aria-labelledby="ariaid-title19" id="new_features__new_features_121"> - <h2 class="title topictitle2" id="ariaid-title18">New Features in Impala 1.2.1</h2> + <h2 class="title topictitle2" id="ariaid-title19">New Features in Impala 1.2.1</h2> <div class="body conbody"> @@ -3102,9 +3135,9 @@ </article> - <article class="topic concept nested1" aria-labelledby="ariaid-title19" id="new_features__new_features_120"> + <article class="topic concept nested1" aria-labelledby="ariaid-title20" id="new_features__new_features_120"> - <h2 class="title topictitle2" id="ariaid-title19">New Features in Impala 1.2.0 (Beta)</h2> + <h2 class="title topictitle2" id="ariaid-title20">New Features in Impala 1.2.0 (Beta)</h2> <div class="body conbody"> @@ -3267,9 +3300,9 @@ </article> - <article class="topic concept nested1" aria-labelledby="ariaid-title20" id="new_features__new_features_111"> + <article class="topic concept nested1" aria-labelledby="ariaid-title21" id="new_features__new_features_111"> - <h2 class="title topictitle2" id="ariaid-title20">New Features in Impala 1.1.1</h2> + <h2 class="title topictitle2" id="ariaid-title21">New Features in Impala 1.1.1</h2> <div class="body conbody"> @@ -3307,9 +3340,9 @@ </article> - <article class="topic concept nested1" aria-labelledby="ariaid-title21" id="new_features__new_features_11"> + <article class="topic concept nested1" aria-labelledby="ariaid-title22" id="new_features__new_features_11"> - <h2 class="title topictitle2" id="ariaid-title21">New Features in Impala 1.1</h2> + <h2 class="title topictitle2" id="ariaid-title22">New Features in Impala 1.1</h2> <div class="body conbody"> @@ -3441,9 +3474,9 @@ </article> - <article class="topic concept nested1" aria-labelledby="ariaid-title22" id="new_features__new_features_101"> + <article class="topic concept nested1" aria-labelledby="ariaid-title23" id="new_features__new_features_101"> - <h2 class="title topictitle2" id="ariaid-title22">New Features in Impala 1.0.1</h2> + <h2 class="title topictitle2" id="ariaid-title23">New Features in Impala 1.0.1</h2> <div class="body conbody"> @@ -3478,9 +3511,9 @@ </article> - <article class="topic concept nested1" aria-labelledby="ariaid-title23" id="new_features__new_features_10"> + <article class="topic concept nested1" aria-labelledby="ariaid-title24" id="new_features__new_features_10"> - <h2 class="title topictitle2" id="ariaid-title23">New Features in Impala 1.0</h2> + <h2 class="title topictitle2" id="ariaid-title24">New Features in Impala 1.0</h2> <div class="body conbody"> @@ -3514,9 +3547,9 @@ </article> - <article class="topic concept nested1" aria-labelledby="ariaid-title24" id="new_features__new_features_07"> + <article class="topic concept nested1" aria-labelledby="ariaid-title25" id="new_features__new_features_07"> - <h2 class="title topictitle2" id="ariaid-title24">New Features in Version 0.7 of the Impala Beta Release</h2> + <h2 class="title topictitle2" id="ariaid-title25">New Features in Version 0.7 of the Impala Beta Release</h2> <div class="body conbody"> @@ -3569,9 +3602,9 @@ </article> - <article class="topic concept nested1" aria-labelledby="ariaid-title25" id="new_features__new_features_06"> + <article class="topic concept nested1" aria-labelledby="ariaid-title26" id="new_features__new_features_06"> - <h2 class="title topictitle2" id="ariaid-title25">New Features in Version 0.6 of the Impala Beta Release</h2> + <h2 class="title topictitle2" id="ariaid-title26">New Features in Version 0.6 of the Impala Beta Release</h2> <div class="body conbody"> @@ -3607,9 +3640,9 @@ </article> - <article class="topic concept nested1" aria-labelledby="ariaid-title26" id="new_features__new_features_05"> + <article class="topic concept nested1" aria-labelledby="ariaid-title27" id="new_features__new_features_05"> - <h2 class="title topictitle2" id="ariaid-title26">New Features in Version 0.5 of the Impala Beta Release</h2> + <h2 class="title topictitle2" id="ariaid-title27">New Features in Version 0.5 of the Impala Beta Release</h2> <div class="body conbody"> @@ -3630,9 +3663,9 @@ </article> - <article class="topic concept nested1" aria-labelledby="ariaid-title27" id="new_features__new_features_04"> + <article class="topic concept nested1" aria-labelledby="ariaid-title28" id="new_features__new_features_04"> - <h2 class="title topictitle2" id="ariaid-title27">New Features in Version 0.4 of the Impala Beta Release</h2> + <h2 class="title topictitle2" id="ariaid-title28">New Features in Version 0.4 of the Impala Beta Release</h2> <div class="body conbody"> @@ -3662,9 +3695,9 @@ </article> - <article class="topic concept nested1" aria-labelledby="ariaid-title28" id="new_features__new_features_03"> + <article class="topic concept nested1" aria-labelledby="ariaid-title29" id="new_features__new_features_03"> - <h2 class="title topictitle2" id="ariaid-title28">New Features in Version 0.3 of the Impala Beta Release</h2> + <h2 class="title topictitle2" id="ariaid-title29">New Features in Version 0.3 of the Impala Beta Release</h2> <div class="body conbody"> @@ -3687,9 +3720,9 @@ </article> - <article class="topic concept nested1" aria-labelledby="ariaid-title29" id="new_features__new_features_02"> + <article class="topic concept nested1" aria-labelledby="ariaid-title30" id="new_features__new_features_02"> - <h2 class="title topictitle2" id="ariaid-title29">New Features in Version 0.2 of the Impala Beta Release</h2> + <h2 class="title topictitle2" id="ariaid-title30">New Features in Version 0.2 of the Impala Beta Release</h2> <div class="body conbody">
