[ https://issues.apache.org/jira/browse/HDFS-14133?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
liaoyuxiangqin updated HDFS-14133: ---------------------------------- Description: When i testing blocks reconstruction triger by data disk offline, i found that the Replicated blocks reconstruction speed limit by {color:#FF0000}dfs.namenode.replication.work.multiplier.per.iteration{color} in namenode compute work, and for a given node the maximum number of outgoing replication streams at one time limit by used {color:#FF0000}dfs.namenode.replication.max-streams{color} and {color:#FF0000}dfs.namenode.replication.max-streams-hard-limit{color}, but for Erasure Coded blocks only limit total blocks to reconstruct one time by {color:#FF0000}dfs.namenode.replication.work.multiplier.per.iteration{color} but not limit maximum of outgoing replication streams per node, so that maybe cause node load imbalance, i think also ec need add node limit. > Add limit of replication streams on a given node at one time for erasurecode > blocks resconstruction > ---------------------------------------------------------------------------------------------------- > > Key: HDFS-14133 > URL: https://issues.apache.org/jira/browse/HDFS-14133 > Project: Hadoop HDFS > Issue Type: Improvement > Components: erasure-coding > Affects Versions: 3.3.0 > Reporter: liaoyuxiangqin > Priority: Major > > When i testing blocks reconstruction triger by data disk offline, i found > that the Replicated blocks reconstruction speed limit by > {color:#FF0000}dfs.namenode.replication.work.multiplier.per.iteration{color} > in namenode compute work, and for a given node the maximum number of outgoing > replication streams at one time limit by used > {color:#FF0000}dfs.namenode.replication.max-streams{color} and > {color:#FF0000}dfs.namenode.replication.max-streams-hard-limit{color}, but > for Erasure Coded blocks only limit total blocks to reconstruct one time by > {color:#FF0000}dfs.namenode.replication.work.multiplier.per.iteration{color} > but not limit maximum of outgoing replication streams per node, so that maybe > cause node load imbalance, i think also ec need add node limit. -- 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