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Surendra Singh Lilhore commented on HDFS-14754: ----------------------------------------------- Thanks [~hemanthboyina] for patch. Some comment for test. # This test code is not able to reproduce this issue currently, the logic of creating redundant block is wrong, it should be something like this. {code:java} // one missing block for (; i < groupSize - 1; i++) { blk.setBlockId(groupId + i); cluster.injectBlocks(i, Arrays.asList(blk), bpid); } cluster.triggerBlockReports(); // one redundant block blk.setBlockId(groupId + 2); cluster.injectBlocks(i, Arrays.asList(blk), bpid); {code} # DFS_NAMENODE_REPLICATION_MAX_STREAMS_KEY configured with 0, this will not allow NN to reconstruct the block. This configuration is not required. # {code:java} + final LocatedBlock[] blocks = + StripedBlockUtil.parseStripedBlockGroup(bg, cellSize, 5, 1);{code} Here pass correct parity and data block count. > 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 > > > 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 -- This message was sent by Atlassian Jira (v8.3.2#803003) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org