Sergey Shelukhin created HDFS-14387:
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Summary: create a client-side override for
dfs.namenode.block-placement-policy.default.prefer-local-node
Key: HDFS-14387
URL: https://issues.apache.org/jira/browse/HDFS-14387
Project: Hadoop HDFS
Issue Type: Bug
Reporter: Sergey Shelukhin
It should be possible for a service to decide whether it wants to use the local
node preference; as it stands, if
dfs.namenode.block-placement-policy.default.prefer-local-node is enabled, the
services that run far fewer instances than there are DNs in the cluster
unnecessarily concentrate their write load; the only way around it seems to be
to disable prefer-local-node globally.
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