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https://issues.apache.org/jira/browse/HDFS-9590?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xiao Chen updated HDFS-9590:
----------------------------
Summary: NPE in Storage$StorageDirectory#unlock() (was: NPE in
Storage#unlock)
> NPE in Storage$StorageDirectory#unlock()
> ----------------------------------------
>
> Key: HDFS-9590
> URL: https://issues.apache.org/jira/browse/HDFS-9590
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Xiao Chen
> Assignee: Xiao Chen
>
> The code looks to be possible to have race conditions in multiple-threaded
> runs.
> {code}
> public void unlock() throws IOException {
> if (this.lock == null)
> return;
> this.lock.release();
> lock.channel().close();
> lock = null;
> }
> {code}
> This is called in a handful of places, and I don't see any protection. Shall
> we add some synchronization mechanism? Not sure if I missed any design
> assumptions here.
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