Daryn Sharp created HDFS-11310:
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Summary: Reduce the performance impact of the balancer (trunk port)
Key: HDFS-11310
URL: https://issues.apache.org/jira/browse/HDFS-11310
Project: Hadoop HDFS
Issue Type: Improvement
Components: hdfs, namenode
Affects Versions: 3.0.0-alpha1
Reporter: Daryn Sharp
Priority: Critical
HDFS-7967 introduced a highly performant balancer getBlocks() query that scales
to large/dense clusters. The simple design implementation depends on the
triplets data structure. HDFS-9260 removed the triplets which fundamentally
changes the implementation. Either that patch must be reverted or the
getBlocks() patch needs reimplementation.
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