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From "Anoop Sam John (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-13670) [HBase MOB] ExpiredMobFileCleaner tool is not deleting the expired mob data.
Date Tue, 12 May 2015 06:11:59 GMT

    [ https://issues.apache.org/jira/browse/HBASE-13670?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14539323#comment-14539323
] 

Anoop Sam John commented on HBASE-13670:
----------------------------------------

{quote}
If we run ExpiredMobFileCleaner tool manually, it is not deleting the expired mob data. For
deletion it is considering default time period "hbase.master.mob.ttl.cleaner.period".
With this Time period "hbase.master.mob.ttl.cleaner.period" only ExpiredMobFileCleanerChore
should consider.
{quote}
That looks not a correct observation. ExpiredMobFileCleanerChore only considers this config
and set it as Chore time.
When the ExpiredMobFileCleaner class is directly executed we just seems compare the file's
create time against TTL.  Is it like some issues of system clock out of sync?

> [HBase MOB] ExpiredMobFileCleaner tool is not deleting the expired mob data.
> ----------------------------------------------------------------------------
>
>                 Key: HBASE-13670
>                 URL: https://issues.apache.org/jira/browse/HBASE-13670
>             Project: HBase
>          Issue Type: Bug
>          Components: mob
>    Affects Versions: hbase-11339
>            Reporter: Y. SREENIVASULU REDDY
>             Fix For: hbase-11339
>
>
> ExpiredMobFileCleaner tool is not deleting the expired mob data.
> steps to reproduce:
> ===============
> 1.Create the table with one column family as mob and set the TTL for mob columnfamily
very less.
> {code}
> hbase(main):020:0> describe 'mobtab'
> Table mobtab is ENABLED
> mobtab
> COLUMN FAMILIES DESCRIPTION
> {NAME => 'mobcf',  IS_MOB => 'true',MOB_THRESHOLD => '102400', VERSIONS =>
'1', KEEP_DELETED_CELLS => 'FALSE', DATA_BLOCK_ENCODING => 'NONE', TTL => '60 SECONDS
(1 MINUTE)', MIN_VERSIONS => '0', REPLICATION_SCOPE => '0', BL
> OOMFILTER => 'ROW', IN_MEMORY => 'false', COMPRESSION => 'NONE', BLOCKCACHE
=> 'true', BLOCKSIZE => '65536'}
> {NAME => 'norcf', BLOOMFILTER => 'ROW', VERSIONS => '1', IN_MEMORY => 'false',
KEEP_DELETED_CELLS => 'FALSE', DATA_BLOCK_ENCODING => 'NONE', COMPRESSION => 'NONE',
TTL => 'FOREVER', MIN_VERSIONS => '0', BL
> OCKCACHE => 'true', BLOCKSIZE => '65536', REPLICATION_SCOPE => '0'}
> 2 row(s) in 0.0650 seconds
> {code}
> 2. then insert the mob data into the table(mobcf), and normal data into the another columnFamily(norcf).
> 3. flush the table.
> 4. scan the table before TTL expire. (able to fetch the data)
> 5. scan the table after TTL got expired, as a result mob data should not display, and
mob file should exist in hdfs.
> 5. run ExpiredMobFileCleaner tool manually to clean the expired mob data for TTL expired
data.
> {code}
> ./hbase org.apache.hadoop.hbase.mob.ExpiredMobFileCleaner mobtab mobcf
> {code}
> {code}
> client log_message:
> 2015-05-09 18:03:37,731 INFO  [main] mob.ExpiredMobFileCleaner: Cleaning the expired
MOB files of mobcf in mobtab
> 2015-05-09 18:03:37,734 INFO  [main] hfile.CacheConfig: CacheConfig:disabled
> 2015-05-09 18:03:37,738 INFO  [main] mob.MobUtils: MOB HFiles older than 8 May 2015 18:30:00
GMT will be deleted!
> 2015-05-09 18:03:37,971 DEBUG [main] mob.MobUtils: Checking file d41d8cd98f00b204e9800998ecf8427e20150509c9108e1a9252418abbfd54323922c518
> 2015-05-09 18:03:37,971 INFO  [main] mob.MobUtils: 0 expired mob files are deleted
> 2015-05-09 18:03:37,971 INFO  [main] client.ConnectionManager$HConnectionImplementation:
Closing master protocol: MasterService
> {code}
> *problem:*
> If we run ExpiredMobFileCleaner tool manually, it is not deleting the expired mob data.
For deletion it is considering default time period "hbase.master.mob.ttl.cleaner.period".
> With this Time period "hbase.master.mob.ttl.cleaner.period" only ExpiredMobFileCleanerChore
should consider.
> {code}
> conf:
> <property>
> <name>hbase.master.mob.ttl.cleaner.period</name>
> <value>86400000</value>
> <source>hbase-default.xml</source>
> </property>
> {code}



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