hadoop一直开机一直处于安全模式

查询集群健康状态

hdfs fsck 

发现有1860个快损坏

/weblog/dim_time.dat: MISSING 1 blocks of total size 601 B.Status: CORRUPT
 Total size:    27258959146 B (Total open files size: 435679 B)
 Total dirs:    1211
 Total files:   2050
 Total symlinks:        0 (Files currently being written: 1)
 Total blocks (validated):  2044 (avg. block size 13336085 B) (Total open file blocks (not validated): 1)
  ********************************
  UNDER MIN REPL'D BLOCKS:  1860 (90.99804 %)
  dfs.namenode.replication.min: 1
  CORRUPT FILES:    1860
  MISSING BLOCKS:   1860
  MISSING SIZE:     24467172505 B
  CORRUPT BLOCKS:   1860
  ********************************
 Minimally replicated blocks:   184 (9.001957 %)
 Over-replicated blocks:    0 (0.0 %)
 Under-replicated blocks:   0 (0.0 %)
 Mis-replicated blocks:     0 (0.0 %)
 Default replication factor:    3
 Average block replication: 0.27005872
 Corrupt blocks:        1860
 Missing replicas:      0 (0.0 %)
 Number of data-nodes:      3
 Number of racks:       1
FSCK ended at Mon Mar 09 05:51:52 CST 2020 in 629 milliseconds


The filesystem under path '/' is CORRUPT

解决方法：

离开安全模式(处于安全模式是无法删除损坏块的)

hadoop dfsadmin -safemode leave

删除损坏块
如果是生产请尝试使用hdfs debug

hdfs fsck  /  -delete