[
https://issues.apache.org/jira/browse/HDFS-3664?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Colin Patrick McCabe updated HDFS-3664:
---------------------------------------
Attachment: HDFS-3664.001.patch
* Previously, we were setting blocksMap to {{null}} before calling
{{datanodeManager#close}}. However, {{DatanodeManager#decommissionThread}}
accesses blocksMap at various times while the thread runs. Instead, wait until
the decommissionThread has been stopped before closing blocksMap.
* We also previously were not joining {{DatanodeManager#decommissionThread}} or
{{DatanodeManager#heartbeatManager}}, so there was no guarantee those threads
would have exited before blocksMap was nulled. Let's join these threads.
> BlockManager race when stopping active services
> -----------------------------------------------
>
> Key: HDFS-3664
> URL: https://issues.apache.org/jira/browse/HDFS-3664
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: test
> Affects Versions: 2.0.0-alpha
> Reporter: Eli Collins
> Attachments: HDFS-3664.001.patch
>
>
> Looks like there's a race hit by the test where we try to do block management
> while shutting down (eg allocate a block or compute replication work after
> BlocksMap#close, resulting in an NPE).
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
