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01-26-2021
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04-28-2022
10:04 AM
There is no direct method or property to disable tombstone marker. Major compacting the mob CF is the only way to go. There is a mob cleaner running on master that removes unreferenced mob files: The period of the cleaner chore can be configured by setting hbase.master.mob.cleaner.period to a positive integer number of seconds. It defaults to running daily. You should not need to tune it unless you have a very aggressive TTL or a very high rate of MOB updates with a correspondingly high rate of non-MOB compactions. So you can check and set the above parameter value and can manually trigger mob compaction by specifying the cf that includes mob data in hbase shell. NOTE : MOBs are mostly for writing large cells that will rarely be updated or deleted but could have TTL configured for the cell or CF.
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07-23-2021
02:39 AM
Hello @Satya_Singh Do let us know if your issue has been resolved. If Yes, Please share the Mitigation Steps followed by you to ensure other Community Users can benefit from your experience & mark the Post as Resolved as well. - Smarak
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04-16-2021
07:16 AM
is this issue resolved?
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04-16-2021
06:39 AM
I am also getting the same issue and restarted zookeeper and then region server and then hbase master but issue didn't resolve. Even I have deleted hbase znode but still issue is there. Regards, Satya
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02-09-2021
08:16 PM
@smdas Yes we are checking the size of the table within the table level directory. hdfs dfs -du -h -s /apps/hbase/data/mobdir/data/OBST/DOCUMENT_CONTENT/b8e8a5fee4eXX/cfDocContent. This is the table structure. create 'MOB:TEST', {NAME => 'cfDocContent', VERSIONS => '1', EVICT_BLOCKS_ON_CLOSE => 'false', NEW_VERSION_BEHAVIOR => 'false', KEEP_DELETED_CELLS => 'FALSE', CACHE_DATA_ON_WRITE => 'false', DATA_BLOCK_ENCODING => 'FAST_DIFF', TTL => 'FOREVER', MIN_VERSIONS => '0', REPLICATION_SCOPE => '0', BLOOMFILTER => 'ROW', CACHE_INDEX_ON_WRITE=> 'false', IN_MEMORY => 'false', CACHE_BLOOMS_ON_WRITE => 'false', PREFETCH_BLOCKS_ON_OPEN => 'false', IS_MOB => 'true', COMPRESSION => 'SNAPPY', BLOCKCACHE=> 'true', BLOCKSIZE => '65536'} , {NAME => 'cfMetadata', VERSIONS => '1', EVICT_BLOCKS_ON_CLOSE => 'false', NEW_VERSION_BEHAVIOR => 'false', KEEP_DELETED_CELLS => 'FALSE', CACHE_DATA_ON_WRITE=> 'false', DATA_BLOCK_ENCODING => 'FAST_DIFF', TTL => 'FOREVER', MIN_VERSIONS => '0', REPLICATION_SCOPE => '0', BLOOMFILTER => 'ROW', CACHE_INDEX_ON_WRITE => 'false', IN_MEMORY => 'false', CACHE_BLOOMS_ON_WRITE => 'false', PREFETCH_BLOCKS_ON_OPEN => 'false', COMPRESSION => 'SNAPPY', BLOCKCACHE => 'true', BLOCKSIZE => '65536'} Satya
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