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https://issues.apache.org/jira/browse/PHOENIX-4176?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16156592#comment-16156592
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Rajeshbabu Chintaguntla commented on PHOENIX-4176:
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bq. One question, when regions are being opened, does HBase client retry the
scanner rpc transparently?
Yes. In this case the HBase client may get NotServingRegionException or
RegionOfflineException in both the cases the HBase client itself retry the
scanning.
> Reduce chances of tests flapping with ColumnFamilyNotFoundException for HBase
> 1.x
> ---------------------------------------------------------------------------------
>
> Key: PHOENIX-4176
> URL: https://issues.apache.org/jira/browse/PHOENIX-4176
> Project: Phoenix
> Issue Type: Bug
> Reporter: Samarth Jain
> Assignee: Samarth Jain
> Attachments: PHOENIX-4176.patch, PHOENIX-4176_v2.patch
>
>
> In HBase 1.x, when adding a new column family, the check to detect whether
> the HTableDescriptor is updated isn't enough. Tests that add a new column
> family run the risk of flapping when number of regions on the table are high
> (since the column family has to be added to all the regions). Till we figure
> out a permanent solution for this, we can possibly decrease chances of such
> tests from flapping by reducing number of regions/pre-splits and possibly
> configuring hbase.online.schema.update.enable to false in our tests.
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