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https://issues.apache.org/jira/browse/HBASE-17287?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15943945#comment-15943945
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Enis Soztutar commented on HBASE-17287:
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bq. How do we assert that master comes down due to the added check ?
Just assert that master is not running (using Waiter.waitFor() and check
MiniHBaseCluster.getLiveMasterThreads() or something). No need to check whether
master aborted because of that.
bq. How about adding test in another issue ?
Realistically that never happens.
> Master becomes a zombie if filesystem object closes
> ---------------------------------------------------
>
> Key: HBASE-17287
> URL: https://issues.apache.org/jira/browse/HBASE-17287
> Project: HBase
> Issue Type: Bug
> Components: master
> Reporter: Clay B.
> Assignee: Ted Yu
> Fix For: 1.4.0, 2.0
>
> Attachments: 17287.branch-1.v3.txt, 17287.master.v2.txt,
> 17287.master.v3.txt, 17287.v2.txt
>
>
> We have seen an issue whereby if the HDFS is unstable and the HBase master's
> HDFS client is unable to stabilize before
> {{dfs.client.failover.max.attempts}} then the master's filesystem object
> closes. This seems to result in an HBase master which will continue to run
> (process and znode exists) but no meaningful work can be done (e.g. assigning
> meta).What we saw in our HBase master logs was:{code}2016-12-01 19:19:08,192
> ERROR org.apache.hadoop.hbase.master.handler.MetaServerShutdownHandler:
> Caught M_META_SERVER_SHUTDOWN, count=1java.io.IOException: failed log
> splitting for cluster-r5n12.bloomberg.com,60200,1480632863218, will retryat
> org.apache.hadoop.hbase.master.handler.MetaServerShutdownHandler.process(MetaServerShutdownHandler.java:84)at
> org.apache.hadoop.hbase.executor.EventHandler.run(EventHandler.java:129)at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)at
>
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)at
> java.lang.Thread.run(Thread.java:745)Caused by: java.io.IOException:
> Filesystem closed{code}
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