He Xiaoqiao created HDFS-14554:
----------------------------------
Summary: Avoid to process duplicate blockreport of when namenode
in startup safemode
Key: HDFS-14554
URL: https://issues.apache.org/jira/browse/HDFS-14554
Project: Hadoop HDFS
Issue Type: Sub-task
Components: namenode
Reporter: He Xiaoqiao
Assignee: He Xiaoqiao
When NameNode restart and enter stage of startup safemode, load of NameNode
could be very high since blockreport request storm from datanodes together.
Sometimes datanode may request blockreport times because NameNode doesn't
return in time and DataNode meet timeoutexception then retry, Thus it sharpens
load of NameNode.
So we should check and filter duplicate blockreport request from one datannode
and reduce load of Namenode.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
---------------------------------------------------------------------
To unsubscribe, e-mail: hdfs-dev-unsubscr...@hadoop.apache.org
For additional commands, e-mail: hdfs-dev-h...@hadoop.apache.org
