Repository: incubator-impala Updated Branches: refs/heads/master cde19ab8c -> ecda49f3e
[DOCS] Add several items to "known issues" page IMPALA-4432 is actually an incompatible change, so it gets listed on the separate "Incompatible Changes" page. Change-Id: Ibeed92e8f6603b858622b1d397d1f5cad810f4cf Reviewed-on: http://gerrit.cloudera.org:8080/5809 Reviewed-by: Tim Armstrong <[email protected]> Reviewed-by: Sailesh Mukil <[email protected]> Reviewed-by: Michael Brown <[email protected]> Tested-by: Impala Public Jenkins Project: http://git-wip-us.apache.org/repos/asf/incubator-impala/repo Commit: http://git-wip-us.apache.org/repos/asf/incubator-impala/commit/95c74b7c Tree: http://git-wip-us.apache.org/repos/asf/incubator-impala/tree/95c74b7c Diff: http://git-wip-us.apache.org/repos/asf/incubator-impala/diff/95c74b7c Branch: refs/heads/master Commit: 95c74b7c9d04bff84dd03275cc9137a8c6395bf8 Parents: cde19ab Author: John Russell <[email protected]> Authored: Fri Jan 27 10:03:47 2017 -0800 Committer: Impala Public Jenkins <[email protected]> Committed: Fri Jun 2 15:32:14 2017 +0000 ---------------------------------------------------------------------- docs/topics/impala_incompatible_changes.xml | 14 +++- docs/topics/impala_known_issues.xml | 94 +++++++++++++++++++++++- 2 files changed, 106 insertions(+), 2 deletions(-) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/incubator-impala/blob/95c74b7c/docs/topics/impala_incompatible_changes.xml ---------------------------------------------------------------------- diff --git a/docs/topics/impala_incompatible_changes.xml b/docs/topics/impala_incompatible_changes.xml index 3878c51..a21e026 100644 --- a/docs/topics/impala_incompatible_changes.xml +++ b/docs/topics/impala_incompatible_changes.xml @@ -152,9 +152,21 @@ under the License. The replication factor for Kudu tables must be an odd number. </p> </li> + <li> + <p rev="IMPALA-4432"> + A UDF compiled into an LLVM IR bitcode module (<codeph>.bc</codeph>) might + encounter a runtime error when native code generation is turned off by + setting the query option <codeph>DISABLE_CODEGEN=1</codeph>. + This issue also applies when running a built-in or native UDF with + more than 20 arguments. + See <xref keyref="IMPALA-4432">IMPALA-4432</xref> for details. + As a workaround, either turn native code generation back on with the query option + <codeph>DISABLE_CODEGEN=0</codeph>, or use the regular UDF compilation path + that does not produce an IR module. + </p> + </li> </ul> </conbody> - </concept> <concept rev="2.7.0" id="incompatible_changes_27x"> http://git-wip-us.apache.org/repos/asf/incubator-impala/blob/95c74b7c/docs/topics/impala_known_issues.xml ---------------------------------------------------------------------- diff --git a/docs/topics/impala_known_issues.xml b/docs/topics/impala_known_issues.xml index d13d23a..75c9d2d 100644 --- a/docs/topics/impala_known_issues.xml +++ b/docs/topics/impala_known_issues.xml @@ -62,7 +62,7 @@ under the License. <conbody> <p> </p> - <p><b>Bug:</b> <xref keyref="" scope="external" format="html"></xref></p> + <p><b>Bug:</b> <xref keyref=""></xref></p> <p><b>Severity:</b> High</p> <p><b>Resolution:</b> </p> <p><b>Workaround:</b> </p> @@ -183,6 +183,19 @@ https://issues.apache.org/jira/browse/IMPALA-2144 - Don't have </conbody> + <concept id="IMPALA-4595"> + <title>Linking IR UDF module to main module crashes Impala</title> + <conbody> + <p> + A UDF compiled as an LLVM module (<codeph>.ll</codeph>) could cause a crash + when executed. + </p> + <p><b>Bug:</b> <xref keyref="IMPALA-4595">IMPALA-4595</xref></p> + <p><b>Severity:</b> High</p> + <p><b>Resolution:</b> Fixed in <keyword keyref="impala28_full"/> and higher.</p> + <p><b>Workaround:</b> Compile the external UDFs to a <codeph>.so</codeph> library instead of a + <codeph>.ll</codeph> IR module.</p> + </conbody> </concept> <concept id="IMPALA-3069" rev="IMPALA-3069"> @@ -332,6 +345,21 @@ https://issues.apache.org/jira/browse/IMPALA-2144 - Don't have </conbody> + <concept id="IMPALA-4570"> + <title>Impala shell tarball is not usable on systems with setuptools versions where '0.7' is a substring of the full version string</title> + <conbody> + <p> + For example, this issue could occur on a system using setuptools version 20.7.0. + </p> + <p><b>Bug:</b> <xref keyref="IMPALA-4570">IMPALA-4570</xref></p> + <p><b>Severity:</b> High</p> + <p><b>Resolution:</b> Fixed in <keyword keyref="impala28_full"/> and higher.</p> + <p><b>Workaround:</b> Change to a setuptools version that does not have <codeph>0.7</codeph> as + a substring. + </p> + </conbody> + </concept> + <concept id="IMPALA-3133" rev="IMPALA-3133"> <title>Unexpected privileges in show output</title> @@ -536,6 +564,20 @@ https://issues.apache.org/jira/browse/IMPALA-2144 - Don't have </conbody> + <concept id="drop_table_purge_s3a"> + <title>DROP TABLE PURGE on S3A table may not delete externally written files</title> + <conbody> + <p> + A <codeph>DROP TABLE PURGE</codeph> 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 + <cmdname>hadoop fs</cmdname> and <cmdname>aws s3</cmdname> commands. + </p> + <p><b>Bug:</b> <xref keyref="IMPALA-3558">IMPALA-3558</xref></p> + <p><b>Severity:</b> High</p> + <p><b>Resolution:</b> The underlying issue with the S3A connector depends on the resolution of <xref href="https://issues.apache.org/jira/browse/HADOOP-13230"; format="html" scope="external">HADOOP-13230</xref>.</p> + </conbody> + </concept> + <concept id="catalogd_heap"> <title>Impala catalogd heap issues when upgrading to <keyword keyref="impala25"/></title> @@ -744,6 +786,40 @@ https://issues.apache.org/jira/browse/IMPALA-2144 - Don't have </conbody> + <concept id="IMPALA-4513"> + <title>ABS(n) where n is the lowest bound for the int types returns negative values</title> + <conbody> + <p> + If the <codeph>abs()</codeph> 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, <codeph>abs(-128)</codeph> returns -128 + because the argument is interpreted as a <codeph>TINYINT</codeph> and the return value is also + a <codeph>TINYINT</codeph>. + </p> + <p><b>Bug:</b> <xref keyref="IMPALA-4513">IMPALA-4513</xref></p> + <p><b>Severity:</b> High</p> + <p><b>Workaround:</b> Cast the integer value to a larger type. For example, rewrite + <codeph>abs(<varname>tinyint_col</varname>)</codeph> as <codeph>abs(cast(<varname>tinyint_col</varname> as smallint))</codeph>.</p> + </conbody> + </concept> + + <concept id="IMPALA-4266"> + <title>Java udf expression returning string in group by can give incorrect results.</title> + <conbody> + <p> + If the <codeph>GROUP BY</codeph> clause included a call to a Java UDF that returned a string value, + the UDF could return an incorrect result. + </p> + <p><b>Bug:</b> <xref keyref="IMPALA-4266">IMPALA-4266</xref></p> + <p><b>Severity:</b> High</p> + <p><b>Resolution:</b> Fixed in <keyword keyref="impala28_full"/> and higher.</p> + <p><b>Workaround:</b> Rewrite the expression to concatenate the results of the Java UDF with an + empty string call. For example, rewrite <codeph>my_hive_udf()</codeph> as + <codeph>concat(my_hive_udf(), '')</codeph>. + </p> + </conbody> + </concept> + <concept id="IMPALA-3084" rev="IMPALA-3084"> <title>Incorrect assignment of NULL checking predicate through an outer join of a nested collection.</title> @@ -1610,6 +1686,21 @@ ALTER TABLE table_name SET TBLPROPERTIES('EXTERNAL'='TRUE'); </conbody> + <concept id="IMPALA-4551"> + <title>Set limits on size of expression trees</title> + <conbody> + <p> + Very deeply nested expressions within queries can exceed internal Impala limits, + leading to excessive memory usage. + </p> + <p><b>Bug:</b> <xref keyref="IMPALA-4551">IMPALA-4551</xref></p> + <p><b>Severity:</b> High</p> + <p><b>Resolution:</b> </p> + <p><b>Workaround:</b> Avoid queries with extremely large expression trees. Setting the query option + <codeph>disable_codegen=true</codeph> may reduce the impact, at a cost of longer query runtime.</p> + </conbody> + </concept> + <concept id="IMPALA-77" rev="IMPALA-77"> <!-- Not part of Alex's spreadsheet. Perhaps it really is a permanent limitation and nobody is tracking it? --> @@ -1804,3 +1895,4 @@ ALTER TABLE table_name SET TBLPROPERTIES('EXTERNAL'='TRUE'); </concept> </concept> +</concept>
