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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PHOENIX-4089) Prevent index from getting out of sync with data table under high concurrency
Date Mon, 21 Aug 2017 04:45:02 GMT

    [ https://issues.apache.org/jira/browse/PHOENIX-4089?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16134695#comment-16134695
] 

Hudson commented on PHOENIX-4089:
---------------------------------

FAILURE: Integrated in Jenkins build Phoenix-master #1744 (See [https://builds.apache.org/job/Phoenix-master/1744/])
PHOENIX-4105 Fix tests broken due to PHOENIX-4089 (addendum 1) (jamestaylor: rev 1dc900884896867d6e641d1c9470eacac133cf91)
* (edit) phoenix-core/src/it/java/org/apache/phoenix/end2end/index/MutableIndexFailureIT.java
* (edit) phoenix-core/src/test/java/org/apache/phoenix/util/TestUtil.java
* (edit) phoenix-core/src/main/java/org/apache/phoenix/coprocessor/MetaDataRegionObserver.java
* (edit) phoenix-core/src/it/java/org/apache/phoenix/end2end/index/PartialIndexRebuilderIT.java


> Prevent index from getting out of sync with data table under high concurrency
> -----------------------------------------------------------------------------
>
>                 Key: PHOENIX-4089
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-4089
>             Project: Phoenix
>          Issue Type: Bug
>            Reporter: James Taylor
>            Assignee: James Taylor
>             Fix For: 4.12.0
>
>         Attachments: PHOENIX-4089_4.x-HBase-0.98.patch, PHOENIX-4089_4.x-HBase-0.98_v2.patch,
PHOENIX-4089_v1.patch, PHOENIX_4089_v2.patch, PHOENIX_4089_v3.patch, PHOENIX-4089_v4.patch
>
>
> Under high concurrency, we're still seeing the index get out of sync with the data table.
It seems that the particular case is when the same Put occurs with the same time stamp from
different clients, based on the locking we do, Phoenix thinks a different Put was the last
one than HBase does, leading to inconsistencies.
> The solution is to timestamp the cells on the server-side after the lock has been taken.
The new concurrent unit test passes 50x with this in place, while it otherwise fails 1/10
of the time (or more on HBase 1.3).



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