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From Rui Gao <r...@yahoo-corp.jp>
Subject HDFS Erasuring Coding Block placement policy related reconstruction work not scheduled appropriately
Date Thu, 09 Jun 2016 05:46:28 GMT
Hi all,

We found out that under RS-DEFAULT-6-3-64k EC policy, if an EC file was witten to 5 racks,
reconstruction work would be scheduled if
the 6th rack is added. While adding the 7th rack or more racks will not trigger reconstruction
work. Based on “BlockPlacementPolicyRackFaultTolerant.java”,
EC file should be scheduled to distribute to 9 racks if possible.

May I file a JIRA to address this issue?

Looking forward to your opinions.
Thank you

Gao Rui


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