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https://issues.apache.org/jira/browse/HDFS-10593?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yuanbo Liu resolved HDFS-10593.
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Resolution: Not A Problem
> MAX_DIR_ITEMS should not be hard coded since RPC buff size is configurable
> ---------------------------------------------------------------------------
>
> Key: HDFS-10593
> URL: https://issues.apache.org/jira/browse/HDFS-10593
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Yuanbo Liu
>
> In HDFS, "dfs.namenode.fs-limits.max-directory-items" was introduced in
> HDFS-6102 to restrict max items of single directory, and the value of it can
> not be larger than the value of MAX_DIR_ITEMS. Since
> "ipc.maximum.data.length" was added in HADOOP-9676 and documented in
> HADOOP-13039 to make maximum RPC buffer size configurable, it's not proper to
> hard code the value of MAX_DIR_ITEMS in {{FSDirectory}}.
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