Thiruvel Thirumoolan created HBASE-22356:
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Summary: API to get hdfs block distribution from regionservers
Key: HBASE-22356
URL: https://issues.apache.org/jira/browse/HBASE-22356
Project: HBase
Issue Type: Sub-task
Components: API, Balancer, regionserver
Reporter: Thiruvel Thirumoolan
Assignee: Thiruvel Thirumoolan
Fix For: 3.0.0, 2.2.1, 1.5.1
A RegionServer API has to be added which will return HDFSBlockDistribution for
all the regions it hosts. RS already has this info cached and updated when
flush/compaction happens. Master can query and get instead of hitting the
namenode and caching. The larger the cluster becomes, the more costly it
becomes to get this information and more stale the cached information becomes.
This jira is only to add the API to regionserver.
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