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Posted to dev@hive.apache.org by "Yongzhi Chen (JIRA)" <ji...@apache.org> on 2014/11/14 17:57:33 UTC
[jira] [Commented] (HIVE-8872) Hive view of HBase range scan
intermittently returns incorrect data.
[ https://issues.apache.org/jira/browse/HIVE-8872?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14212472#comment-14212472 ]
Yongzhi Chen commented on HIVE-8872:
------------------------------------
Incorrect data returns only when hive.optimize.ppd=true
Fixed by adding synchronized block for method getSplit in HiveHBaseTableInputFormat
> Hive view of HBase range scan intermittently returns incorrect data.
> --------------------------------------------------------------------
>
> Key: HIVE-8872
> URL: https://issues.apache.org/jira/browse/HIVE-8872
> Project: Hive
> Issue Type: Bug
> Affects Versions: 0.13.1
> Reporter: Yongzhi Chen
> Assignee: Yongzhi Chen
>
> This need running in cluster:
> 1. Create a hive external table pointing to a hbase table.
> 2. Create views to the hive table(for example 30 views), each view looks like following with different range check:
> CREATE VIEW hview_nn AS SELECT * FROM hivehbasetable WHERE (pk >='pk_nn_0' AND pk <= pk_nn_A')
> 3. Create same number of hive new tables as views.
> 4. then runs several queries in parallel (30 threads):
> INSERT OVERWRITE TABLE hivenewtable_nn SELECT * FROM hview_nn //nn is from 01 to 30
> 5 After insert, check the hivenewtables, some values are not right.
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