[
https://issues.apache.org/jira/browse/HIVE-18410?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16351368#comment-16351368
]
Hive QA commented on HIVE-18410:
--------------------------------
Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12909083/HIVE-18410_3.patch
{color:green}SUCCESS:{color} +1 due to 2 test(s) being added or modified.
{color:red}ERROR:{color} -1 due to 26 failed/errored test(s), 12972 tests
executed
*Failed tests:*
{noformat}
org.apache.hadoop.hive.cli.TestAccumuloCliDriver.testCliDriver[accumulo_queries]
(batchId=240)
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver[auto_sortmerge_join_2]
(batchId=49)
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver[mapjoin_hook]
(batchId=13)
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver[mm_cttas] (batchId=47)
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver[ppd_join5] (batchId=36)
org.apache.hadoop.hive.cli.TestEncryptedHDFSCliDriver.testCliDriver[encryption_move_tbl]
(batchId=175)
org.apache.hadoop.hive.cli.TestMiniLlapCliDriver.testCliDriver[llap_smb]
(batchId=152)
org.apache.hadoop.hive.cli.TestMiniLlapCliDriver.testCliDriver[mm_cttas]
(batchId=150)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[bucket_map_join_tez1]
(batchId=172)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[insert_values_orig_table_use_metadata]
(batchId=167)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[llap_acid]
(batchId=171)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[llap_acid_fast]
(batchId=161)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[resourceplan]
(batchId=164)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[sysdb]
(batchId=161)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[vectorization_input_format_excludes]
(batchId=163)
org.apache.hadoop.hive.cli.TestMiniSparkOnYarnCliDriver.testCliDriver[bucketizedhiveinputformat]
(batchId=180)
org.apache.hadoop.hive.cli.TestSparkCliDriver.testCliDriver[ppd_join5]
(batchId=122)
org.apache.hadoop.hive.cli.control.TestDanglingQOuts.checkDanglingQOut
(batchId=221)
org.apache.hadoop.hive.ql.TestTxnNoBuckets.testCTAS (batchId=280)
org.apache.hadoop.hive.ql.TestTxnNoBucketsVectorized.testCTAS (batchId=280)
org.apache.hadoop.hive.ql.exec.TestOperators.testNoConditionalTaskSizeForLlap
(batchId=282)
org.apache.hadoop.hive.ql.io.TestDruidRecordWriter.testWrite (batchId=256)
org.apache.hive.beeline.cli.TestHiveCli.testNoErrorDB (batchId=188)
org.apache.hive.jdbc.TestSSL.testConnectionMismatch (batchId=234)
org.apache.hive.jdbc.TestSSL.testConnectionWrongCertCN (batchId=234)
org.apache.hive.jdbc.TestSSL.testMetastoreConnectionWrongCertCN (batchId=234)
{noformat}
Test results: https://builds.apache.org/job/PreCommit-HIVE-Build/9000/testReport
Console output: https://builds.apache.org/job/PreCommit-HIVE-Build/9000/console
Test logs: http://104.198.109.242/logs/PreCommit-HIVE-Build-9000/
Messages:
{noformat}
Executing org.apache.hive.ptest.execution.TestCheckPhase
Executing org.apache.hive.ptest.execution.PrepPhase
Executing org.apache.hive.ptest.execution.YetusPhase
Executing org.apache.hive.ptest.execution.ExecutionPhase
Executing org.apache.hive.ptest.execution.ReportingPhase
Tests exited with: TestsFailedException: 26 tests failed
{noformat}
This message is automatically generated.
ATTACHMENT ID: 12909083 - PreCommit-HIVE-Build
> [Performance][Avro] Reading flat Avro tables is very expensive in Hive
> ----------------------------------------------------------------------
>
> Key: HIVE-18410
> URL: https://issues.apache.org/jira/browse/HIVE-18410
> Project: Hive
> Issue Type: Improvement
> Affects Versions: 3.0.0, 2.3.2
> Reporter: Ratandeep Ratti
> Assignee: Ratandeep Ratti
> Priority: Major
> Fix For: 3.0.0, 2.3.2
>
> Attachments: HIVE-18410.patch, HIVE-18410_1.patch,
> HIVE-18410_2.patch, HIVE-18410_3.patch, profiling_with_patch.nps,
> profiling_with_patch.png, profiling_without_patch.nps,
> profiling_without_patch.png
>
>
> There's a performance penalty when reading flat [no nested fields] Avro
> tables. When reading the same flat dataset in Pig, it takes half the time.
> On profiling, a lot of time is spent in
> {{AvroDeserializer.deserializeSingleItemNullableUnion()}}. The bulk of the
> time is spent in GenericData.get().resolveUnion(), which calls
> GenericData.getSchemaName(Object datum), which does a lot of instanceof
> checks. This could be simplified with performance benefits. A approach is
> described in this patch which almost halves the runtime.
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