[HDFS-10827] When there are unrecoverable ec block groups, Namenode Web UI shows "There are X missing blocks." but doesn't show the block names.

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.0.0-alpha2
• Component/s: erasure-coding
• Hadoop Flags: Reviewed
• Assignee: Takanobu Asanuma
• Reporter: Takanobu Asanuma
• Created: 01/Sep/16 10:45
• Updated: 16/Oct/18 22:56
• Resolved: 14/Oct/16 20:24

Description

For RS-6-3, when there is one ec block group and
1) 0~3 out of 9 internal blocks are missing, NN Web UI doesn't show any warns.
2) 4~8 out of 9 internal blocks are missing, NN Web UI shows "There are 1 missing blocks." but doesn't show the block names. (please see case_2.png)
3) 9 out of 9 internal blocks are missing, NN Web UI shows "There are 1 missing blocks." and also shows the block name. (please see case_3.png)

We should fix the case 2). I think NN Web UI should show the block names since the ec block group is unrecoverable.

The values come from JMX. "There are X missing blocks." is NumberOfMissingBlocks and the block names are CorruptFiles.

Issue Links

• is related to: HDFS-13999 Bogus missing block warning if the file is under construction when NN starts
• is required by: HDFS-10975 fsck -list-corruptfileblocks does not report corrupt EC files