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https://issues.apache.org/jira/browse/HDFS-14754?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16945301#comment-16945301
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Surendra Singh Lilhore commented on HDFS-14754:
-----------------------------------------------
Test it with fix and without fix
*With fix*
{noformat}
[INFO] -------------------------------------------------------
[INFO] T E S T S
[INFO] -------------------------------------------------------
[INFO] Running org.apache.hadoop.hdfs.server.namenode.TestRedudantBlocks
[INFO] Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 6.686 s
- in org.apache.hadoop.hdfs.server.namenode.TestRedudantBlocks
[INFO]
[INFO] Results:
[INFO]
[INFO] Tests run: 1, Failures: 0, Errors: 0, Skipped: 0 {noformat}
*Wihout fix*
{noformat}
[INFO] -------------------------------------------------------
[INFO] T E S T S
[INFO] -------------------------------------------------------
[INFO] Running org.apache.hadoop.hdfs.server.namenode.TestRedudantBlocks
[ERROR] Tests run: 1, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 6.605 s
<<< FAILURE! - in org.apache.hadoop.hdfs.server.namenode.TestRedudantBlocks
[ERROR]
testProcessOverReplicatedAndRedudantBlock(org.apache.hadoop.hdfs.server.namenode.TestRedudantBlocks)
Time elapsed: 6.509 s <<< FAILURE!
java.lang.AssertionError: expected:<5> but was:<4>
at org.junit.Assert.fail(Assert.java:88)
at org.junit.Assert.failNotEquals(Assert.java:834)
at org.junit.Assert.assertEquals(Assert.java:645)
at org.junit.Assert.assertEquals(Assert.java:631)
at
org.apache.hadoop.hdfs.server.namenode.TestRedudantBlocks.testProcessOverReplicatedAndRedudantBlock(TestRedudantBlocks.java:135)
{noformat}
> 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
> Components: ec
> Reporter: hemanthboyina
> Assignee: hemanthboyina
> Priority: Critical
> Fix For: 3.3.0, 3.1.4, 3.2.2
>
> Attachments: HDFS-14754-addendum.001.patch,
> HDFS-14754-addendum.002.patch, HDFS-14754.001.patch, HDFS-14754.002.patch,
> HDFS-14754.003.patch, HDFS-14754.004.patch, HDFS-14754.005.patch,
> HDFS-14754.006.patch, HDFS-14754.007.patch, HDFS-14754.008.patch,
> HDFS-14754.branch-3.1.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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