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Posted to hdfs-issues@hadoop.apache.org by "Virajith Jalaparti (JIRA)" <ji...@apache.org> on 2017/11/04 00:01:06 UTC
[jira] [Created] (HDFS-12778) [READ] Report multiple locations for
PROVIDED blocks
Virajith Jalaparti created HDFS-12778:
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Summary: [READ] Report multiple locations for PROVIDED blocks
Key: HDFS-12778
URL: https://issues.apache.org/jira/browse/HDFS-12778
Project: Hadoop HDFS
Issue Type: Sub-task
Reporter: Virajith Jalaparti
Priority: Major
On {{getBlockLocations}}, only one Datanode is returned as the location for all PROVIDED blocks. This can hurt the performance of applications which typically 3 locations per block. We need to return multiple Datanodes for each PROVIDED block for better application performance/resilience.
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