Resolve Region “not on HDFS or in hbase:meta but deployed on” issue in Hbase

Region “not on HDFS or in hbase:meta but deployed on” Error indicate that you have a stale reference in the regions server memory

The below error can be observed in the HBCK output

hbase hbck -details | grep ERROR 

ERROR: Region { meta => null, hdfs => null, deployed => learnshare1.net,60035,14483702453554;default:test_table,c09,14483702453554.89445wdfs84829324r28uese93jw., replicaId => 0 }, key=89445wdfs84829324r28uese93jw, not on HDFS or in hbase:meta but deployed on learnshare1.net,60035,14483702453554

ERROR: Region { meta => null, hdfs => null, deployed => learnshare2.net,60035,1448334235554;default:test_table2,y24x00,1448334235554.cdasdki83ouluefsgd6352293., replicaId => 0 }, key=cdasdki83ouluefsgd6352293, not on HDFS or in hbase:meta but deployed on learnshare2.net,60035,1448334235554

Troubleshooting the issue:

Make sure to validate if the region for that table is an exit in the HBase data directory

hadoop fs -ls /hbase/data///

Example:

hadoop fs -ls /hbase/data/default/test_table2/cdasdki83ouluefsgd6352293

ls /hbase/data/default/test_table2/cdasdki83ouluefsgd6352293: No such file or directory

The above error message, Confirms that there is no data available on this region. So it would be safe to proceed with the resolution

Resolution:

Restarting the region server will resolve the issue by clearing the stale entry in the memory

We have restarted the “learnshare1.net” region server and it fixed the entry and we didn’t see any inconsistency

hbase hbck -details | grep ERROR 

Good Luck with your Learning!!

Related Topics:

Resolve “Orphan region in HDFS: Unable to load .regioninfo from table” in Hbase

Resolve “hole in the region chain” issue in Hbase

Resolve “org.apache.hadoop.hbase.TableInfoMissingException: No table descriptor file under” in Hbase