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https://issues.apache.org/jira/browse/HDFS-14754?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16924916#comment-16924916
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Ayush Saxena commented on HDFS-14754:
-------------------------------------
Thanx [~hemanthboyina] for the patch and [~surendrasingh] for the review..
bq. Replicated block was not deleting and missing block is not able to
ReConstruct.
HDFS-14699 seems to be handling a quite similar scenario. Whether post that
gets in, still this problem be there. Whether reconstruction will still not
happen, without this? [~hemanthboyina] can you give a check once.
Anyway on a quick look, For the UT, Can you add some comments regarding what
actually the process you are trying to validate, for better undesirability.
{code:java}
+ int i = 0;
+ // one missing block
+ for (; i < groupSize - 1; i++)
{code}
Any reasons for making i out?
{code:java}
+ cluster.triggerBlockReports();
+ cluster.triggerHeartbeats();
+ cluster.triggerHeartbeats();
+ cluster.triggerBlockReports();
{code}
Can you add a line explaining why it is required twice, here.
> Erasure Coding : The number of Under-Replicated Blocks never reduced
> ---------------------------------------------------------------------
>
> Key: HDFS-14754
> URL: https://issues.apache.org/jira/browse/HDFS-14754
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: hemanthboyina
> Assignee: hemanthboyina
> Priority: Critical
> Attachments: HDFS-14754.001.patch, HDFS-14754.002.patch,
> HDFS-14754.003.patch, HDFS-14754.004.patch, HDFS-14754.005.patch,
> HDFS-14754.006.patch
>
>
> Using EC RS-3-2, 6 DN
> We came accross a scenario where in the EC 5 blocks , same block is
> replicated thrice and two blocks got missing
> Replicated block was not deleting and missing block is not able to ReConstruct
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