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ASF GitHub Bot logged work on HDFS-16514: ----------------------------------------- Author: ASF GitHub Bot Created on: 15/Apr/22 04:20 Start Date: 15/Apr/22 04:20 Worklog Time Spent: 10m Work Description: liubingxing commented on PR #4088: URL: https://github.com/apache/hadoop/pull/4088#issuecomment-1099836851 @tasanuma Please take a look at this. Thanks a lot. Issue Time Tracking ------------------- Worklog Id: (was: 757291) Time Spent: 1.5h (was: 1h 20m) > Reduce the failover sleep time if multiple namenode are configured > ------------------------------------------------------------------ > > Key: HDFS-16514 > URL: https://issues.apache.org/jira/browse/HDFS-16514 > Project: Hadoop HDFS > Issue Type: Improvement > Reporter: qinyuren > Priority: Major > Labels: pull-request-available > Attachments: image-2022-03-21-18-11-37-191.png > > Time Spent: 1.5h > Remaining Estimate: 0h > > Recently, we used the [Standby Read] feature in our test cluster, and > deployed 4 namenode as follow: > node1 -> active nn > node2 -> standby nn > node3 -> observer nn > node3 -> observer nn > If we set ’dfs.client.failover.random.order=true‘, the client may failover > twice and wait a long time to send msync to active namenode. > !image-2022-03-21-18-11-37-191.png|width=698,height=169! > I think we can reduce the sleep time of the first several failover based on > the number of namenode > For example, if 4 namenode are configured, the sleep time of first three > failover operations is set to zero. -- This message was sent by Atlassian Jira (v8.20.1#820001) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org