[jira] [Commented] (HIVE-17341) DbTxnManger.startHeartbeat() - randomize initial delay

["Hive QA (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-17341?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16141477#comment-16141477 ] 

Hive QA commented on HIVE-17341:
--------------------------------



Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12883636/HIVE-17341.01.patch

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

{color:red}ERROR:{color} -1 due to 4 failed/errored test(s), 11000 tests executed
*Failed tests:*
{noformat}
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.TestPerfCliDriver.testCliDriver[query23] (batchId=235)
org.apache.hive.jdbc.TestJdbcWithMiniHS2.testHttpRetryOnServerIdleTimeout (batchId=228)
{noformat}

Test results: https://builds.apache.org/job/PreCommit-HIVE-Build/6536/testReport
Console output: https://builds.apache.org/job/PreCommit-HIVE-Build/6536/console
Test logs: http://104.198.109.242/logs/PreCommit-HIVE-Build-6536/

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: 12883636 - PreCommit-HIVE-Build

> DbTxnManger.startHeartbeat() - randomize initial delay
> ------------------------------------------------------
>
>                 Key: HIVE-17341
>                 URL: https://issues.apache.org/jira/browse/HIVE-17341
>             Project: Hive
>          Issue Type: Improvement
>          Components: Transactions
>            Reporter: Eugene Koifman
>            Assignee: Eugene Koifman
>         Attachments: HIVE-17341.01.patch
>
>
> This sets up a fixed delay for all heartebeats.  If many queries land on the server at the same time,
> they will wake up and start hearbeating at the same time causing a bottleneck.
> Add some random element to heatbeat delay.



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