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Ayush Saxena commented on HDFS-15120: ------------------------------------- Hi [~LiJinglun] Observed one problem here, this fix will work if we want to change the value back to default. but not a new one. since you are not setting the new value in the conf. In the test also we just tested from MockBPP to DefaultBPP. and this works. But I think the reverse won't work. Give a check once > Refresh BlockPlacementPolicy at runtime. > ---------------------------------------- > > Key: HDFS-15120 > URL: https://issues.apache.org/jira/browse/HDFS-15120 > Project: Hadoop HDFS > Issue Type: Improvement > Reporter: Jinglun > Assignee: Jinglun > Priority: Major > Fix For: 3.3.0 > > Attachments: HDFS-15120.001.patch, HDFS-15120.002.patch, > HDFS-15120.003.patch, HDFS-15120.004.patch, HDFS-15120.005.patch, > HDFS-15120.006.patch, HDFS-15120.007.1.patch, HDFS-15120.007.patch, > HDFS-15120.008.patch > > > Now if we want to switch BlockPlacementPolicies we need to restart the > NameNode. It would be convenient if we can switch it at runtime. For example > we can switch between AvailableSpaceBlockPlacementPolicy and > BlockPlacementPolicyDefault as needed. -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org