[ https://issues.apache.org/jira/browse/HDFS-3411?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Tsz Wo Nicholas Sze resolved HDFS-3411. --------------------------------------- Resolution: Not A Problem Resolving as not-a-problem. Please feel free to reopen if you disagree. > Balancer fails to balance blocks between aboveAvgUtilized and > belowAvgUtilized datanodes. > ----------------------------------------------------------------------------------------- > > Key: HDFS-3411 > URL: https://issues.apache.org/jira/browse/HDFS-3411 > Project: Hadoop HDFS > Issue Type: Bug > Components: balancer & mover > Affects Versions: 0.23.0 > Reporter: Ashish Singhi > > Scaenario: > replication set to 1. > 1. Start 1NN and IDN > 2. pump 1GB of data. > 3. Start one more DN > 4. Run balancer with threshold 1. > Now DN1 is added into aboveAvgUtilizedDatanodes and DN2 into > belowAvgUtilizedDatanodes. Hence overLoadedBytes and underLoadedBytes will be > equal to 0. Resulting in bytesLeftToMove equal to 0. Thus balancer will exit > without balancing the blocks. -- This message was sent by Atlassian JIRA (v6.3.4#6332)