Hari Sekhon created HBASE-21014: ----------------------------------- Summary: Improve Stochastic Balancer to write HDFS favoured node hints for region primary blocks to avoid destroying data locality if needing to use HDFS Balancer Key: HBASE-21014 URL: https://issues.apache.org/jira/browse/HBASE-21014 Project: HBase Issue Type: Improvement Components: Balancer Affects Versions: 1.1.2 Reporter: Hari Sekhon
Improve Stochastic Balancer to include the HDFS region location hints to avoid HDFS Balancer destroying data locality. Right now according to a mix of docs, jiras and mailing list info it appears that one must change {code:java} hbase.master.loadbalancer.class{code} to the org.apache.hadoop.hbase.favored.FavoredNodeLoadBalancer asĀ it looks like this functionality is only within FavouredNodeBalancer and not the standard Stochastic Balancer. [http://hbase.apache.org/book.html#_hbase_and_hdfs] This is not ideal because we'd still like to use all the heuristics and work that has gone in the Stochastic Balancer which I believe right now is the best and most mature HBase balancer. See also the linked Jiras and this discussion: [http://apache-hbase.679495.n3.nabble.com/HDFS-Balancer-td4086607.html] -- This message was sent by Atlassian JIRA (v7.6.3#76005)