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From "Jonathan Gray (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HBASE-3207) If we get IOException when closing a region, we should still remove it from online regions and complete the close in ZK
Date Mon, 08 Nov 2010 23:20:11 GMT

     [ https://issues.apache.org/jira/browse/HBASE-3207?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jonathan Gray updated HBASE-3207:
---------------------------------

    Attachment: HBASE-3207-v1.patch

Just makes it so we do the ZK transition and remove from online regions, even if IOException.
 Adds a little more detail to logging and comments.

> If we get IOException when closing a region, we should still remove it from online regions
and complete the close in ZK
> -----------------------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-3207
>                 URL: https://issues.apache.org/jira/browse/HBASE-3207
>             Project: HBase
>          Issue Type: Bug
>          Components: regionserver
>    Affects Versions: 0.90.0
>            Reporter: Jonathan Gray
>            Assignee: Jonathan Gray
>             Fix For: 0.90.0
>
>         Attachments: HBASE-3207-v1.patch
>
>
> Ran into issue on cluster where HDFS was taken out from under it.  RS eventually tried
to shut itself down.  As regions were being closed, they got IOException "Filesystem closed".
 In the CloseRegionHandlers, this was causing the close operation to not finish (in ZK and
in the online region list in RS).  That, in turn, held up the waitOnAllRegionsToClose() so
the RS never shut down.
> If we get an IOException during a close, which can happen if fatal error doing flush,
this is not recoverable so we should complete the region close in ZK and by removing from
map of online regions on that RS.

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