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https://issues.apache.org/jira/browse/HDFS-4356?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13551562#comment-13551562
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Colin Patrick McCabe commented on HDFS-4356:
--------------------------------------------
* added debug guard in {{BlockReaderLocal#close}}
* fix comment for {{FileInputStreamCache#closed}}
{{DaemonFactory}} has this code:
{code}
\@Override
public Thread newThread(Runnable runnable) {
return new Daemon(runnable);
}
{code}
... and {{Daemon}}'s constructor looks like this:
{code}
/** Construct a daemon thread. */
public Daemon(Runnable runnable) {
super(runnable);
this.runnable = runnable;
this.setName(((Object)runnable).toString());
}
{code}
So it will set the thread name appropriately.
> BlockReaderLocal should use passed file descriptors rather than paths
> ---------------------------------------------------------------------
>
> Key: HDFS-4356
> URL: https://issues.apache.org/jira/browse/HDFS-4356
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: datanode, hdfs-client, performance
> Affects Versions: 2.0.3-alpha
> Reporter: Colin Patrick McCabe
> Assignee: Colin Patrick McCabe
> Attachments: 04b-cumulative.patch, _04b.patch, _04c.patch,
> 04-cumulative.patch, 04d-cumulative.patch, _04e.patch, 04f-cumulative.patch,
> _04f.patch, 04g-cumulative.patch
>
>
> {{BlockReaderLocal}} should use file descriptors passed over UNIX domain
> sockets rather than paths. We also need some configuration options for these
> UNIX domain sockets.
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