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https://issues.apache.org/jira/browse/HDFS-5016?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Suresh Srinivas updated HDFS-5016:
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Attachment: HDFS-5016.2.patch
New patch adds an undocumented configuration for xceiver thread stop timeouts.
I also liked the way HDFS-4815 captured the stack trace. I have folded
equivalent change in to this patch.
> Heartbeating thread blocks under some failure conditions leading to loss of
> datanodes
> -------------------------------------------------------------------------------------
>
> Key: HDFS-5016
> URL: https://issues.apache.org/jira/browse/HDFS-5016
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Devaraj Das
> Assignee: Suresh Srinivas
> Priority: Blocker
> Fix For: 2.1.0-beta
>
> Attachments: HDFS-5016.1.patch, HDFS-5016.2.patch, HDFS-5016.patch,
> jstack1.txt
>
>
> In the testing of some failure scenarios for HBase MTTR, we have been
> simulating node failures via firewalling of nodes (where all communication
> ports would be firewalled except ssh's port). We have noticed that when a
> (data)node is firewalled, we lose certain other datanodes - those that were
> involved in some communication with the firewalled node before the latter was
> firewalled. Will attach jstack output from one of the lost datanodes. The
> heartbeating thread seems to be locked up.
> This jira is to track a fix for the problem.
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