Shuyan Zhang created HDFS-16735:
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Summary: Reduce the number of HeartbeatManager loops
Key: HDFS-16735
URL: https://issues.apache.org/jira/browse/HDFS-16735
Project: Hadoop HDFS
Issue Type: Improvement
Reporter: Shuyan Zhang
HeartbeatManager only processes one dead datanode (and failed storage) per
round in heartbeatCheck(), that is to say, if there are ten failed storages,
all datanode states need to be scanned 10 times, which is unnecessary. This
patch makes the number of bad storages processed per scan configurable.
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