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https://issues.apache.org/jira/browse/HDFS-340?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Todd Lipcon resolved HDFS-340.
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Resolution: Not A Problem
This was resolved somewhere along the line with an undocumented config
parameter.
> Allow MAX_XCEIVER_COUNT to be configured
> ----------------------------------------
>
> Key: HDFS-340
> URL: https://issues.apache.org/jira/browse/HDFS-340
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Arun C Murthy
>
> Currently DataXcieverServer.java hardcodes MAX_XCEIVER_COUNT to 256.
> I ran a randomwriter with 4k maps and output replication set to 40 - all
> write pipelines failed since each DataNode hit the above limit and refused
> connections.
> Should we consider making it configurable?
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