CatalogJanitor trying to delete an already deleted region from META

["Ramkrishna.S.Vasudevan" <ra...@huawei.com>]

Hi Devs



The region 9e28c97ccec104f3174ecf343cb59157 is a parent region.  It got
splitted into 2 daughter regions.

The CatalogJanitor deleted this entry from META.  Subsequent run of Catalog
Janitor did not find the deleted region from META.  After 5 times of
CatalogJanitor running, it again found the deleted region.

Anyway this time as the region was deleted from HDFS we got the below warn
log.


2012-01-13 07:46:49,552 WARN org.apache.hadoop.hbase.regionserver.HRegion:
Failed delete of
hdfs://193.195.18.121:9000/hbase/Htable_UFDR_037/9e28c97ccec104f3174ecf343cb
59157 

But why did the CatalogJanitor again pick up this deleted region in META.
fullScan().  The same scenario has happened for about 6 regions in the same
time.  From the RS logs we could not find any operation pertaining to this
region during that time.

Any clues or suggestions?

 

Regards

Ram