Race condition when clietn and namenode start block recovery simultaneously
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Key: HADOOP-3503
URL: https://issues.apache.org/jira/browse/HADOOP-3503
Project: Hadoop Core
Issue Type: Bug
Components: dfs
Affects Versions: 0.18.0
Reporter: dhruba borthakur
Assignee: dhruba borthakur
When a client detects a error while writing to a block, it starts the
generation-stamp-protocol to remove stale replicas. At the same time, if the
namenode experiences a lease expiry event for that file, the namenode starts
the generation-stamp-protocol for the same block. Now, the client and thr
namenode ping-pongs trying to stamp the block replicas. This ping-pong can
continue for a long time.
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