Hi ,
I have a mini Hadoop cluster of 3 nodes with DN and TT running on each node
and replication is set to 3.By mistake I tried to write few files which
requires replication of 10. When I checked the HDFS status with FSCK utility it
shows :
/root/Hadoop/hadoop-root/mapred/system/job_201109201112_0001/job.jar 2352841
bytes, 1 block(s): Under replicated blk_-9220069752024407718_1546. Target
Replicas is 10 but found 3 replica(s).
0. blk_-9220069752024407718_1546 len=2352841 repl=3 [10.33.100.74:50010,
10.33.64.235:50010, 10.33.100.117:50010]
/root/Hadoop/hadoop-root/mapred/system/job_201109201112_0001/libjars <dir>
/root/Hadoop/hadoop-root/mapred/system/job_201109201112_0001/libjars/hadoop-0.20.2-core.jar
2707856 bytes, 1 block(s): Under replicated blk_-4791859336845413240_1544.
Target Replicas is 10 but found 3 replica(s).
0. blk_-4791859336845413240_1544 len=2707856 repl=3 [10.33.100.74:50010,
10.33.64.235:50010, 10.33.100.117:50010]
....................................................
Status: HEALTHY
Total size: 45239704 B
Total dirs: 101
Total files: 88 (Files currently being written: 3)
Total blocks (validated): 88 (avg. block size 514087 B) (Total open file
blocks (not validated): 3)
Minimally replicated blocks: 88 (100.0 %)
Over-replicated blocks: 0 (0.0 %)
Under-replicated blocks: 20 (22.727272 %)
Mis-replicated blocks: 0 (0.0 %)
Default replication factor: 2
Average block replication: 2.4318182
Corrupt blocks: 0
Missing replicas: 140 (65.42056 %)
Number of data-nodes: 3
Number of racks: 1
I wanted to know that can I fix :
1. Under-replicated
2. Missing replicas
Please Suggest
Thanks
Stuti
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