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From "suja s (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-3442) Incorrect count for Missing Replicas in FSCK report
Date Fri, 18 May 2012 09:18:08 GMT
suja s created HDFS-3442:
----------------------------

             Summary: Incorrect count for Missing Replicas in FSCK report
                 Key: HDFS-3442
                 URL: https://issues.apache.org/jira/browse/HDFS-3442
             Project: Hadoop HDFS
          Issue Type: Bug
    Affects Versions: 2.0.0
            Reporter: suja s
            Priority: Minor


Scenario:
Cluster running in HA mode with 2 DNs. Files are written with replication factor as 3.
There are 7 blocks in cluster.
FSCK report is including all blocks in UnderReplicated Blocks as well as Missing Replicas.

HOST-XX-XX-XX-102:/home/Apr4/hadoop-2.0.0-SNAPSHOT/bin # ./hdfs fsck /
Connecting to namenode via http://XX.XX.XX.55:50070
FSCK started by root (auth:SIMPLE) from /XX.XX.XX.102 for path / at Wed Apr 04 17:28:37 IST
2012
.
/1:  Under replicated BP-534619337-XX.XX.XX.55-1333526344705:blk_2551710840802340037_1002.
Target Replicas is 3 but found 2 replica(s).
.
/2:  Under replicated BP-534619337-XX.XX.XX.55-1333526344705:blk_-3851276776144500288_1004.
Target Replicas is 3 but found 2 replica(s).
.
/3:  Under replicated BP-534619337-XX.XX.XX.55-1333526344705:blk_-3210606555285049524_1006.
Target Replicas is 3 but found 2 replica(s).
.
/4:  Under replicated BP-534619337-XX.XX.XX.55-1333526344705:blk_4028835120510075310_1008.
Target Replicas is 3 but found 2 replica(s).
.
/5:  Under replicated BP-534619337-XX.XX.XX.55-1333526344705:blk_-5238093749956876969_1010.
Target Replicas is 3 but found 2 replica(s).
.
/testrenamed/file1renamed:  Under replicated BP-534619337-XX.XX.XX.55-1333526344705:blk_-5669194716756513504_1012.
Target Replicas is 3 but found 2 replica(s).
.
/testrenamed/file2:  Under replicated BP-534619337-XX.XX.XX.55-1333526344705:blk_8510284478280941311_1014.
Target Replicas is 3 but found 2 replica(s).
Status: HEALTHY
 Total size:    33215 B
 Total dirs:    3
 Total files:   7 (Files currently being written: 1)
 Total blocks (validated):      7 (avg. block size 4745 B)
 Minimally replicated blocks:   7 (100.0 %)
 Over-replicated blocks:        0 (0.0 %)
 Under-replicated blocks:       7 (100.0 %)
 Mis-replicated blocks:         0 (0.0 %)
 Default replication factor:    3
 Average block replication:     2.0
 Corrupt blocks:                0
 Missing replicas:              7 (50.0 %)
 Number of data-nodes:          2
 Number of racks:               1
FSCK ended at Wed Apr 04 17:28:37 IST 2012 in 2 milliseconds


The filesystem under path '/' is HEALTHY

Also it indicates a measure as 50% in brackets (There are only 7 blocks in cluster and so
if all 7 are included as Missing replicas it should be 100%)

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