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From "Hive QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-17495) CachedStore: prewarm improvement (avoid multiple sql calls to read partition column stats), refactoring and caching some aggregate stats
Date Fri, 12 Jan 2018 07:49:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-17495?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16323664#comment-16323664
] 

Hive QA commented on HIVE-17495:
--------------------------------



Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12905751/HIVE-17495.8.patch

{color:green}SUCCESS:{color} +1 due to 1 test(s) being added or modified.

{color:red}ERROR:{color} -1 due to 23 failed/errored test(s), 11567 tests executed
*Failed tests:*
{noformat}
org.apache.hadoop.hive.cli.TestBlobstoreCliDriver.testCliDriver[insert_blobstore_to_blobstore]
(batchId=248)
org.apache.hadoop.hive.cli.TestBlobstoreCliDriver.testCliDriver[ptf_general_queries] (batchId=248)
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver[ppd_join5] (batchId=35)
org.apache.hadoop.hive.cli.TestMiniLlapCliDriver.testCliDriver[llap_smb] (batchId=150)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[bucket_map_join_tez1]
(batchId=169)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[bucketsortoptimize_insert_2]
(batchId=151)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[hybridgrace_hashjoin_2]
(batchId=156)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[insert_values_orig_table_use_metadata]
(batchId=164)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[llap_acid] (batchId=168)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[llap_acid_fast] (batchId=159)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[sysdb] (batchId=159)
org.apache.hadoop.hive.cli.TestNegativeCliDriver.testCliDriver[authorization_part] (batchId=93)
org.apache.hadoop.hive.cli.TestNegativeCliDriver.testCliDriver[stats_aggregator_error_1] (batchId=93)
org.apache.hadoop.hive.cli.TestSparkCliDriver.testCliDriver[ppd_join5] (batchId=120)
org.apache.hadoop.hive.metastore.TestEmbeddedHiveMetaStore.testTransactionalValidation (batchId=213)
org.apache.hadoop.hive.metastore.cache.TestCachedStore.testDatabaseOps (batchId=201)
org.apache.hadoop.hive.metastore.cache.TestCachedStore.testPartitionOps (batchId=201)
org.apache.hadoop.hive.metastore.cache.TestCachedStore.testTableOps (batchId=201)
org.apache.hadoop.hive.ql.io.TestDruidRecordWriter.testWrite (batchId=253)
org.apache.hadoop.hive.ql.parse.TestReplicationScenarios.testConstraints (batchId=225)
org.apache.hive.jdbc.TestSSL.testConnectionMismatch (batchId=231)
org.apache.hive.jdbc.TestSSL.testConnectionWrongCertCN (batchId=231)
org.apache.hive.jdbc.TestSSL.testMetastoreConnectionWrongCertCN (batchId=231)
{noformat}

Test results: https://builds.apache.org/job/PreCommit-HIVE-Build/8586/testReport
Console output: https://builds.apache.org/job/PreCommit-HIVE-Build/8586/console
Test logs: http://104.198.109.242/logs/PreCommit-HIVE-Build-8586/

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: 23 tests failed
{noformat}

This message is automatically generated.

ATTACHMENT ID: 12905751 - PreCommit-HIVE-Build

> CachedStore: prewarm improvement (avoid multiple sql calls to read partition column stats),
refactoring and caching some aggregate stats
> ----------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-17495
>                 URL: https://issues.apache.org/jira/browse/HIVE-17495
>             Project: Hive
>          Issue Type: Bug
>          Components: Metastore
>            Reporter: Vaibhav Gumashta
>            Assignee: Vaibhav Gumashta
>         Attachments: HIVE-17495.1.patch, HIVE-17495.2.patch, HIVE-17495.3.patch, HIVE-17495.4.patch,
HIVE-17495.5.patch, HIVE-17495.6.patch, HIVE-17495.7.patch, HIVE-17495.8.patch
>
>
> Only when CachedStore is enabled, we would like to make the following optimizations:
> 1. During CachedStore prewarm, use one sql call to retrieve column stats objects for
a db and store it in the cache.
> 2. Cache some aggregate stats  (e.g. aggregate stats for all partitions, which seems
to be commonly used) for query compilation speedup.
> 3. There was a bug in {{MetaStoreUtils.aggrPartitionStats}}, which would use an iterator.next
w/o checking with iterator.hasNext. This patch refactors some code to fix that.



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