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Li Bo updated HDFS-9657: ------------------------ Attachment: HDFS-9657-001.patch > Schedule EC tasks at proper time to reduce the impact of recovery traffic > ------------------------------------------------------------------------- > > Key: HDFS-9657 > URL: https://issues.apache.org/jira/browse/HDFS-9657 > Project: Hadoop HDFS > Issue Type: Sub-task > Reporter: Li Bo > Assignee: Li Bo > Attachments: HDFS-9657-001.patch > > > The EC recover tasks consume a lot of network bandwidth and disk I/O. > Recovering a corrupt block requires transferring 6 blocks , hence creating a > 6X overhead in network bandwidth and disk I/O. When a datanode fails , the > recovery of the whole blocks on this datanode may use up the network > bandwith. We need to start a recovery task at a proper time in order to give > less impact to the system. -- This message was sent by Atlassian JIRA (v6.3.4#6332)