一、检查Hbase
使用hbase hbck -details 检查HBase发现多处异常，包括以下四种异常
1、HDFS数据问题
ERROR: Found lingering reference file
2、MetaData问题
ERROR: Region meta listed in hbase:meta on region server aaa but found on region server bbb
ERROR: Region meta => null on HDFS, but not listed in hbase:meta or deployed on any region server
3、regions重叠问题
ERROR: Multiple regions have the same startkey/endkey
ERROR: regions There is an overlap in the region chain.
4、表数据不一致
ERROR: Found inconsistency in table ods_jzgl15:eaj_jz
二、解决异常
问题1解决方法
ERROR: Found lingering reference file hdfs://emr-cluster/hbase/data/ods_jzgl15/eaj_jz/xxx
修复方法：
$ su - hbase
$ hbase hbck -fixReferenceFiles eaj_jz
问题2-4解决方法
ERROR: Region { meta => null, hdfs => hdfs://emr-cluster/hbase/data/ods_jzgl15/eaj_jz/5e4643e6acf8823fbe7bfd1baa9aac9f, deployed => , replicaId => 0 } on HDFS, but not listed in hbase:meta or deployed on any region server
修复方法：
先关闭表：
hbase(main):002:0> disable "ods_jzgl15:eaj_jz"
再执行：
$ hbase hbck -fixMeta -fixAssignments "ods_jzgl15:eaj_jz" > 20210407_1st_tried_repaired_eaj_jz 2>&1 &
$ hbase hbck -fixAssignments "ods_jzgl15:eaj_jz" > 20210407_2nd_tried_repaired_eaj_jz 2>&1 &
$ hbase hbck
上述命令未生效：
查看修复帮助：
hbase hbck --help
Metadata Repair shortcuts
-repair Shortcut for -fixAssignments -fixMeta -fixHdfsHoles -fixHdfsOrphans -fixHdfsOverlaps -fixVersionFile -sidelineBigOverlaps -fixReferenceFiles -fixTableLocks –fixOrphanedTableZnodes
执行repair操作（该命令为高危操作，谨慎操作）：
$ hbase hbck -repair "ods_jzgl15:eaj_jz" > 20210407_3td_tried_repaired_eaj_jz 2>&1 &
再次执行检查，异常全部修复
$ hbase hbck
