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From "Hive QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-15376) Improve heartbeater scheduling for transactions
Date Wed, 21 Dec 2016 19:41:58 GMT

    [ https://issues.apache.org/jira/browse/HIVE-15376?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15767964#comment-15767964
] 

Hive QA commented on HIVE-15376:
--------------------------------



Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12844266/HIVE-15376.13.patch

{color:green}SUCCESS:{color} +1 due to 2 test(s) being added or modified.

{color:red}ERROR:{color} -1 due to 9 failed/errored test(s), 10334 tests executed
*Failed tests:*
{noformat}
TestDerbyConnector - did not produce a TEST-*.xml file (likely timed out) (batchId=234)
TestSparkCliDriver - did not produce a TEST-*.xml file (likely timed out) (batchId=112)
	[vectorization_16.q,load_dyn_part5.q,join_casesensitive.q,transform_ppr2.q,join23.q,groupby7_map_skew.q,ppd_outer_join5.q,create_merge_compressed.q,louter_join_ppr.q,sample9.q,smb_mapjoin_16.q,vectorization_not.q,having.q,ppd_outer_join1.q,union_remove_12.q]
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver[str_to_map] (batchId=58)
org.apache.hadoop.hive.cli.TestMiniLlapCliDriver.testCliDriver[transform_ppr2] (batchId=135)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[stats_based_fetch_decision]
(batchId=151)
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver[explainanalyze_2] (batchId=93)
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver[explainanalyze_3] (batchId=92)
org.apache.hadoop.hive.cli.TestNegativeCliDriver.testCliDriver[exchange_partition_neg_incomplete_partition]
(batchId=84)
org.apache.hadoop.hive.cli.TestNegativeCliDriver.testCliDriver[exim_00_unsupported_schema]
(batchId=85)
{noformat}

Test results: https://builds.apache.org/job/PreCommit-HIVE-Build/2677/testReport
Console output: https://builds.apache.org/job/PreCommit-HIVE-Build/2677/console
Test logs: http://104.198.109.242/logs/PreCommit-HIVE-Build-2677/

Messages:
{noformat}
Executing org.apache.hive.ptest.execution.TestCheckPhase
Executing org.apache.hive.ptest.execution.PrepPhase
Executing org.apache.hive.ptest.execution.ExecutionPhase
Tests exited with: OutOfMemoryError: Java heap space
{noformat}

This message is automatically generated.

ATTACHMENT ID: 12844266 - PreCommit-HIVE-Build

> Improve heartbeater scheduling for transactions
> -----------------------------------------------
>
>                 Key: HIVE-15376
>                 URL: https://issues.apache.org/jira/browse/HIVE-15376
>             Project: Hive
>          Issue Type: Bug
>          Components: Transactions
>    Affects Versions: 2.2.0
>            Reporter: Wei Zheng
>            Assignee: Wei Zheng
>         Attachments: HIVE-15376.1.patch, HIVE-15376.10.patch, HIVE-15376.11.patch, HIVE-15376.12.patch,
HIVE-15376.13.patch, HIVE-15376.2.patch, HIVE-15376.3.patch, HIVE-15376.4.patch, HIVE-15376.5.patch,
HIVE-15376.6.patch, HIVE-15376.7.patch, HIVE-15376.8.patch, HIVE-15376.9.patch
>
>
> HIVE-12366 improved the heartbeater logic by bringing down the gap between the lock acquisition
and first heartbeat, but that's not enough, there may still be some issue, e.g.
>  Time A: a transaction is opened
>  Time B: acquireLocks is called (blocking call), but it can take a long time to actually
acquire the locks and return if the system is busy
>  Time C: as acquireLocks returns, the first heartbeat is sent
> If hive.txn.timeout < C - A, then the transaction will be timed out and aborted, thus
causing failure.



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