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From "Hive QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-17265) Cache merged column stats from retrieved partitions
Date Tue, 22 Aug 2017 22:42:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-17265?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16137539#comment-16137539
] 

Hive QA commented on HIVE-17265:
--------------------------------



Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12883188/HIVE-17265.04.patch

{color:red}ERROR:{color} -1 due to no test(s) being added or modified.

{color:red}ERROR:{color} -1 due to 10 failed/errored test(s), 10980 tests executed
*Failed tests:*
{noformat}
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[dynamic_partition_pruning]
(batchId=151)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[vectorized_dynamic_partition_pruning]
(batchId=152)
org.apache.hadoop.hive.cli.TestMiniSparkOnYarnCliDriver.testCliDriver[spark_vectorized_dynamic_partition_pruning]
(batchId=169)
org.apache.hadoop.hive.cli.TestPerfCliDriver.testCliDriver[query14] (batchId=235)
org.apache.hadoop.hive.cli.TestSparkCliDriver.org.apache.hadoop.hive.cli.TestSparkCliDriver
(batchId=105)
org.apache.hadoop.hive.common.TestFileUtils.testCopyWithDistCpAs (batchId=250)
org.apache.hadoop.hive.common.TestFileUtils.testCopyWithDistcp (batchId=250)
org.apache.hive.hcatalog.api.TestHCatClient.testPartitionRegistrationWithCustomSchema (batchId=180)
org.apache.hive.hcatalog.api.TestHCatClient.testPartitionSpecRegistrationWithCustomSchema
(batchId=180)
org.apache.hive.hcatalog.api.TestHCatClient.testTableSchemaPropagation (batchId=180)
{noformat}

Test results: https://builds.apache.org/job/PreCommit-HIVE-Build/6491/testReport
Console output: https://builds.apache.org/job/PreCommit-HIVE-Build/6491/console
Test logs: http://104.198.109.242/logs/PreCommit-HIVE-Build-6491/

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: 10 tests failed
{noformat}

This message is automatically generated.

ATTACHMENT ID: 12883188 - PreCommit-HIVE-Build

> Cache merged column stats from retrieved partitions
> ---------------------------------------------------
>
>                 Key: HIVE-17265
>                 URL: https://issues.apache.org/jira/browse/HIVE-17265
>             Project: Hive
>          Issue Type: Bug
>          Components: Statistics
>    Affects Versions: 3.0.0
>            Reporter: Jesus Camacho Rodriguez
>            Assignee: Jesus Camacho Rodriguez
>         Attachments: HIVE-17265.02.patch, HIVE-17265.03.patch, HIVE-17265.04.patch, HIVE-17265.patch
>
>
> Currently when we retrieve stats from the metastore for a column in a partitioned table,
we will execute the logic to merge the column stats coming from each partition multiple times.
> Even though we avoid multiple calls to metastore if the cache for the stats in enabled,
merging the stats for a given column can take a large amount of time if there is a large number
of partitions.



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