[ https://issues.apache.org/jira/browse/HDFS-12946?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Xiao Chen updated HDFS-12946: ----------------------------- Status: Patch Available (was: Open) > Add a tool to check rack configuration against EC policies > ---------------------------------------------------------- > > Key: HDFS-12946 > URL: https://issues.apache.org/jira/browse/HDFS-12946 > Project: Hadoop HDFS > Issue Type: Improvement > Components: erasure-coding > Reporter: Xiao Chen > Assignee: Xiao Chen > Attachments: HDFS-12946.01.patch > > > From testing we have seen setups with problematic racks / datanodes that > would not suffice basic EC usages. These are usually found out only after the > tests failed. > We should provide a way to check this beforehand. > Some scenarios: > - not enough datanodes compared to EC policy's highest data+parity number > - not enough racks to satisfy BPPRackFaultTolerant > - highly uneven racks to satisfy BPPRackFaultTolerant > - highly uneven racks (so that BPP's considerLoad logic may exclude some busy > nodes on the rack, resulting in #2) -- This message was sent by Atlassian JIRA (v6.4.14#64029) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org