Fixing hbck Inconsistencies

Execute 'hbck_chore_run' in hbase shell to generate a new sub-report.

Hole issue:

- verify if region is existing in both HDFS and meta.

- If not in HDFS it is data loss or cleared by cleaner_chore already.

- If not in Meta we can use hbck2 jar reportMissingInMeta option to find out the missing records in meta

- Then use addFsRegionsInMeta option to add missing records back to meta

- Then restart Active Master and then assigns those regions

Orphan Regions:

Refer https://community.cloudera.com/t5/Support-Questions/Hbase-Orphan-Regions-on-Filesystem-shows-967-regions-in-set/td-p/307959

- Do "ls" to see "recovered.edits" if there is no HFile means that region was splitting and it failed.

- Replay using WALPlayer

hbase org.apache.hadoop.hbase.mapreduce.WALPlayer hdfs://bdsnameservice/hbase/data/Namespace/Table/57ed0b774aef9158cfda87c945a0afae/recovered.edits/0000000000001738473 Namespace:Table

- Move the Orphan region to some temporary location and clean up later.

- Execute 'hbck_chore_run' in hbase shell to generate a new sub-report.

Comments

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