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https://issues.apache.org/jira/browse/HIVE-15065?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15607364#comment-15607364
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Hive QA commented on HIVE-15065:
--------------------------------
Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12835238/HIVE-15065.1.patch
{color:green}SUCCESS:{color} +1 due to 1 test(s) being added or modified.
{color:red}ERROR:{color} -1 due to 4 failed/errored test(s), 10622 tests
executed
*Failed tests:*
{noformat}
org.apache.hadoop.hive.cli.TestHBaseCliDriver.testCliDriver[hbase_bulk]
(batchId=89)
org.apache.hive.beeline.TestBeelineArgParsing.testAddLocalJarWithoutAddDriverClazz[0]
(batchId=164)
org.apache.hive.beeline.TestBeelineArgParsing.testAddLocalJar[0] (batchId=164)
org.apache.hive.beeline.TestBeelineArgParsing.testAddLocalJar[1] (batchId=164)
{noformat}
Test results: https://builds.apache.org/job/PreCommit-HIVE-Build/1804/testReport
Console output: https://builds.apache.org/job/PreCommit-HIVE-Build/1804/console
Test logs: http://104.198.109.242/logs/PreCommit-HIVE-Build-1804/
Messages:
{noformat}
Executing org.apache.hive.ptest.execution.TestCheckPhase
Executing org.apache.hive.ptest.execution.PrepPhase
Executing org.apache.hive.ptest.execution.ExecutionPhase
Executing org.apache.hive.ptest.execution.ReportingPhase
Tests exited with: TestsFailedException: 4 tests failed
{noformat}
This message is automatically generated.
ATTACHMENT ID: 12835238 - PreCommit-HIVE-Build
> SimpleFetchOptimizer should decide based on metastore stats when available
> --------------------------------------------------------------------------
>
> Key: HIVE-15065
> URL: https://issues.apache.org/jira/browse/HIVE-15065
> Project: Hive
> Issue Type: Bug
> Components: Logical Optimizer
> Affects Versions: 2.2.0
> Reporter: Prasanth Jayachandran
> Assignee: Prasanth Jayachandran
> Attachments: HIVE-15065.1.patch
>
>
> Currently the decision to use fetch optimizer or not is based on scanning the
> filesystem for file lengths and see if the aggregated size is less the fetch
> task threshold. This can be very expensive for cloud environment. This issue
> is mitigated to some extent by HIVE-14920 but still that requires file system
> scan. We can make decision based on the stats from metastore and falling back
> when stats is not available. Since fast stats (numRows and fileSize) is
> always available this should work most of the time.
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