hdfs 遇到坏块不要慌

先用该命令检测存在哪些坏块

********************************
CORRUPT FILES:    28
MISSING BLOCKS:    28
MISSING SIZE:        1078476 B
CORRUPT BLOCKS:     28
********************************
Minimally replicated blocks:    3 (9.67742 %)
Over-replicated blocks:    0 (0.0 %)
Under-replicated blocks:    0 (0.0 %)
Mis-replicated blocks:        0 (0.0 %)
Default replication factor:    1
Average block replication:    0.09677419
Corrupt blocks:        28
Missing replicas:        0 (0.0 %)
Number of data-nodes:        1
Number of racks:        1
FSCK ended at Thu Jul 07 12:10:08 CST 2016 in 11 milliseconds

The filesystem under path ‘/’ is CORRUPT

然后发现坏块所在路径,执行下列命令删除坏块

hdfs fsck  / -delete

再次检测坏块,发现已经不存在坏块

FSCK started by hadoop (auth:SIMPLE) from /192.168.56.200 for path / at Thu Jul 07 12:15:34 CST 2016
…Status: HEALTHY
Total size:    163749 B
Total dirs:    20
Total files:    3
Total symlinks:        0
Total blocks (validated):    3 (avg. block size 54583 B)
Minimally replicated blocks:    3 (100.0 %)
Over-replicated blocks:    0 (0.0 %)
Under-replicated blocks:    0 (0.0 %)
Mis-replicated blocks:        0 (0.0 %)
Default replication factor:    1
Average block replication:    1.0
Corrupt blocks:        0
Missing replicas:        0 (0.0 %)
Number of data-nodes:        1
Number of racks:        1
FSCK ended at Thu Jul 07 12:15:34 CST 2016 in 5 milliseconds

The filesystem under path ‘/’ is HEALTHY

引用原文https://blog.csdn.net/u011478909/article/details/51867213

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