HDFS-8824 平衡数据的时候不移动小文件

Do not use small blocks for balancing the cluster

https://issues.apache.org/jira/browse/HDFS-8824

 

 

Allow Balancer to run faster

https://issues.apache.org/jira/browse/HDFS-8818

 

平衡设置的文章:https://community.hortonworks.com/articles/43849/hdfs-balancer-2-configurations-cli-options.html

 

线程不够会导致平衡卡死,评论说这样改参数可以绕过

By setting dfs.balancer.moverThreads to a value big than dfs.datanode.balance.max.concurrent.moves * <numberOfDatanodes> also works.

https://issues.apache.org/jira/browse/HDFS-11377




fatkun

折腾一下又不会死~

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