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https://issues.apache.org/jira/browse/HDFS-13272?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16416513#comment-16416513
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Chris Douglas commented on HDFS-13272:
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bq. Rather than making it configurable, it might be better to simply reduce it.
This makes sense to branch-3.x. For older branches, there still might be hftp
users
Reducing the default makes sense for both 3.x and branch-2. [~kihwal], to be
clear, should it be configurable on branch-2 so it can be raised for hftp
users, but dropped to the minimum for 3.x?
> DataNodeHttpServer to have configurable HttpServer2 threads
> -----------------------------------------------------------
>
> Key: HDFS-13272
> URL: https://issues.apache.org/jira/browse/HDFS-13272
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: datanode
> Reporter: Erik Krogen
> Assignee: Erik Krogen
> Priority: Major
>
> In HDFS-7279, the Jetty server on the DataNode was hard-coded to use 10
> threads. In addition to the possibility of this being too few threads, it is
> much higher than necessary in resource constrained environments such as
> MiniDFSCluster. To avoid compatibility issues, rather than using
> {{HttpServer2#HTTP_MAX_THREADS}} directly, we can introduce a new
> configuration for the DataNode's thread pool size.
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