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Ayush Saxena commented on HDFS-14061: ------------------------------------- Thanks [~knanasi] for the patch. {quote}A warning is shown if the cluster topology verify fails for all enabled policies, when enabling a policy. {quote} I guess if we are enabling RS(6,3) warning should be shown wrt to the policy which we are enabling.We should not be bothered about the others not in that transaction. {quote}Policy setting fails if the cluster topology verification fails for the policy {quote} IMO This will be quite harsh and guess might be considered as incompatible too.Moreover for EC File say RS(6,3) I guess It is not mandatory that it should have strictly 9 DN's for successful write. In cases it can be successful with lesser numbers too. I think a warning if the policy that we are enabling is not supported should be well enough. > Check if the cluster topology supports the EC policy before setting, enabling > or adding it > ------------------------------------------------------------------------------------------ > > Key: HDFS-14061 > URL: https://issues.apache.org/jira/browse/HDFS-14061 > Project: Hadoop HDFS > Issue Type: Improvement > Components: erasure-coding, hdfs > Affects Versions: 3.1.1 > Reporter: Kitti Nanasi > Assignee: Kitti Nanasi > Priority: Major > Attachments: HDFS-14061.001.patch > > > HDFS-12946 introduces a command for verifying if there are enough racks and > datanodes for the enabled erasure coding policies. > This verification could be executed for the erasure coding policy before > enabling, setting or adding it and a warning message could be written if the > verify fails, or the policy setting could be even failed in this case. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org