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https://issues.apache.org/jira/browse/HDFS-1880?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13059349#comment-13059349
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Aaron T. Myers commented on HDFS-1880:
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bq. Yes , we may need to control this retries, so that it can break this loop
after some number of retries.Because continusly getting timeout exception also
can be consider as some problem in cluster environment.
There's a fair amount of code to support automatic retries with configurable
policies for IPC calls. Perhaps this could be adapted slightly and reused in
the case of failures during data transfer. The relevant code is all in
"{{common/src/java/org/apache/hadoop/(io|ipc)}}".
> When Namenode network is unplugged, DFSClient operations waits for ever
> -----------------------------------------------------------------------
>
> Key: HDFS-1880
> URL: https://issues.apache.org/jira/browse/HDFS-1880
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs client
> Reporter: Uma Maheswara Rao G
>
> When NN/DN is shutdown gracefully, the DFSClient operations which are waiting
> for a response from NN/DN, will throw exception & come out quickly
> But when the NN/DN network is unplugged, the DFSClient operations which are
> waiting for a response from NN/DN, waits for ever.
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