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From "Rajeshbabu Chintaguntla (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PHOENIX-4176) Reduce chances of tests flapping with ColumnFamilyNotFoundException for HBase 1.x
Date Thu, 07 Sep 2017 07:09:00 GMT

    [ https://issues.apache.org/jira/browse/PHOENIX-4176?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16156592#comment-16156592
] 

Rajeshbabu Chintaguntla commented on PHOENIX-4176:
--------------------------------------------------

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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