Ayush Saxena created HDFS-15162:
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Summary: Optimize frequency of regular block reports
Key: HDFS-15162
URL: https://issues.apache.org/jira/browse/HDFS-15162
Project: Hadoop HDFS
Issue Type: Improvement
Reporter: Ayush Saxena
Assignee: Ayush Saxena
Avoid sending block report at regular interval, if there is no failover,
DiskError or any exception encountered in connecting to the Namenode.
This JIRA intents to limit the regular block reports to be sent only in case of
the above scenarios and during re-registration of datanode, to eliminate the
overhead of processing BlockReports at Namenode in case of huge clusters.
*Eg.* If a block report was sent at 0000 hours and the next was scheduled at
0600 hours if there is no above mentioned scenario, it will skip sending the
BR, and schedule it to next 1200 hrs. if something of such sort happens between
06:- 12: it would send the BR normally.
*NOTE*: This would be optional and can be turned off by default. Would add a
configuration to enable this.
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