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https://issues.apache.org/jira/browse/HBASE-29644?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Anuj Sharma resolved HBASE-29644.
---------------------------------
Resolution: Fixed
> Refresh_meta triggering compaction on user table
> ------------------------------------------------
>
> Key: HBASE-29644
> URL: https://issues.apache.org/jira/browse/HBASE-29644
> Project: HBase
> Issue Type: Sub-task
> Reporter: Shanmukha Haripriya Kota
> Assignee: Anuj Sharma
> Priority: Critical
> Labels: pull-request-available
>
> *Steps to repro (Use docker setup:
> [https://github.com/anmolnar/hbase-docker):]*
> * Create table in active (do not execute refresh_meta yet on read-only)
> {code:java}
> create 'test_sft', {NAME => 'colFam', CONFIGURATION =>
> {'hbase.store.file-tracker.impl' => 'FILE'}}{code}
> * Insert 3 to 4 rows in the table, do flush after each insert to create
> multiple HFiles.
> {code:java}
> put 'test_sft', 'row1', 'colFam:name', 'John Doe1'{code}
> * List of HFiles:
> {noformat}
> % ls -la
> tmp/data-store/hbase/data/default/test_sft/f940c3c652b5941154a81ece7bdbe889/colFam
> total 48
> drwxr-xr-x@ 6 anuj.sharma staff 192 6 Oct 18:32 .
> drwxr-xr-x@ 4 anuj.sharma staff 128 6 Oct 18:28 ..
> drwxr-xr-x@ 3 anuj.sharma staff 96 6 Oct 18:32 .filelist
> -rw-r--r--@ 1 anuj.sharma staff 5003 6 Oct 18:30
> 0592645fee714be6913b46e64ffc4e54
> -rw-r--r--@ 1 anuj.sharma staff 5003 6 Oct 18:32
> 0e383a65b8b44884b5dc3127c3235bbf
> -rw-r--r--@ 1 anuj.sharma staff 5003 6 Oct 18:29
> 71fc8cdc10734c6786c583445bd0ae6e{noformat}
> * .filelist content:
> {noformat}
> % cat
> tmp/data-store/hbase/data/default/test_sft/f940c3c652b5941154a81ece7bdbe889/colFam/.filelist/f1.1759755531106
> ???̛3%
> 71fc8cdc10734c6786c583445bd0ae6e?'%
> 0592645fee714be6913b46e64ffc4e54?'%
> 0e383a65b8b44884b5dc3127c3235bbf?'?$%{noformat}
> * Now execute refresh_meta on read-only cluster. You will see new file
> created (Other files will get automatically deleted after sometime):
> {noformat}
> % ls -la
> tmp/data-store/hbase/data/default/test_sft/f940c3c652b5941154a81ece7bdbe889/colFam
> total 64
> drwxr-xr-x@ 7 anuj.sharma staff 224 6 Oct 18:36 .
> drwxr-xr-x@ 4 anuj.sharma staff 128 6 Oct 18:28 ..
> drwxr-xr-x@ 4 anuj.sharma staff 128 6 Oct 18:36 .filelist
> -rw-r--r--@ 1 anuj.sharma staff 5003 6 Oct 18:30
> 0592645fee714be6913b46e64ffc4e54
> -rw-r--r--@ 1 anuj.sharma staff 5003 6 Oct 18:32
> 0e383a65b8b44884b5dc3127c3235bbf
> -rw-r--r--@ 1 anuj.sharma staff 5003 6 Oct 18:29
> 71fc8cdc10734c6786c583445bd0ae6e
> -rw-r--r--@ 1 anuj.sharma staff 5200 6 Oct 18:36
> cc941ddf322a472f80601ff13535d7aa --> New file created post
> refresh_meta{noformat}
> * If we open the file it has something like hence I feel its a compacted
> file:
> {noformat}
> COMPACTION_EVENT_KEYjPBUF
> 71fc8cdc10734c6786c583445bd0ae6e
> 0e383a65b8b44884b5dc3127c3235bbf
> 0592645fee714be6913b46e64ffc4e54
>
> {noformat}
>
> In the log of region server you will see minor compactions are being
> triggered after opening a new region on the read replica cluster. Investigate
> and fix the ReadOnlyController.
> {code:java}
> 2025-10-06T22:16:13,552 INFO
> [RS_OPEN_REGION-regionserver/hbase-docker-2:16020-0]
> handler.AssignRegionHandler: Opened
> t1,,1759788781868.60e54b8e10b9e2655bf1b2aca04e9a2f.
> 2025-10-06T22:16:13,556 INFO
> [regionserver/hbase-docker-2:16020-shortCompactions-0] regionserver.HRegion:
> Starting compaction of 60e54b8e10b9e2655bf1b2aca04e9a2f/cf1 in
> t1,,1759788781868.60e54b8e10b9e2655bf1b2aca04e9a2f.
> 2025-10-06T22:16:13,557 INFO
> [regionserver/hbase-docker-2:16020-shortCompactions-0] regionserver.HStore:
> Starting compaction of
> [file:/data-store/hbase/data/default/t1/60e54b8e10b9e2655bf1b2aca04e9a2f/cf1/3dc8900fdcf04883a6f03700cec86b92,
>
> file:/data-store/hbase/data/default/t1/60e54b8e10b9e2655bf1b2aca04e9a2f/cf1/d136f2f138964f7f80732492995c55fe,
>
> file:/data-store/hbase/data/default/t1/60e54b8e10b9e2655bf1b2aca04e9a2f/cf1/08d326c0525b44bb8d3745baf4932c02,
>
> file:/data-store/hbase/data/default/t1/60e54b8e10b9e2655bf1b2aca04e9a2f/cf1/bac69e5664b5456ca787ca31e22e6b2d]
> into
> tmpdir=file:/data-store/hbase/data/default/t1/60e54b8e10b9e2655bf1b2aca04e9a2f/.tmp,
> totalSize=19.4 K
> 2025-10-06T22:16:13,568 INFO [HBase-Metrics2-1]
> impl.GlobalMetricRegistriesAdapter: Registering
> RegionServer,sub=TableRequests_Namespace_default_table_t1 Metrics about
> Tables on a single HBase RegionServer
> 2025-10-06T22:16:13,657 INFO
> [regionserver/hbase-docker-2:16020-shortCompactions-0]
> throttle.PressureAwareThroughputController:
> 60e54b8e10b9e2655bf1b2aca04e9a2f#cf1#compaction#0 average throughput is 0.06
> MB/second, slept 0 time(s) and total slept time is 0 ms. 0 active operations
> remaining, total limit is 50.00 MB/second
> 2025-10-06T22:16:13,771 INFO
> [regionserver/hbase-docker-2:16020-shortCompactions-0] regionserver.HStore:
> Completed compaction of 4 (all) file(s) in
> 60e54b8e10b9e2655bf1b2aca04e9a2f/cf1 of 60e54b8e10b9e2655bf1b2aca04e9a2f into
> c9189f98667f48a2a8fad2bd9d68187b(size=5.1 K), total size for store is 5.1 K.
> This selection was in queue for 0sec, and took 0sec to execute.
> 2025-10-06T22:16:13,774 INFO
> [regionserver/hbase-docker-2:16020-shortCompactions-0]
> regionserver.CompactSplit: Completed compaction
> region=t1,,1759788781868.60e54b8e10b9e2655bf1b2aca04e9a2f.,
> storeName=60e54b8e10b9e2655bf1b2aca04e9a2f/cf1, priority=12,
> startTime=1759788973546; duration=0sec
> 2025-10-06T22:16:45,074 INFO [LruBlockCacheStatsExecutor]
> hfile.LruBlockCache: totalSize=786.40 MB, usedSize=590.80 KB, freeSize=785.82
> MB, max=786.40 MB, blockCount=0, accesses=4, hits=0, hitRatio=0,
> cachingAccesses=0, cachingHits=0, cachingHitsRatio=0,evictions=29, evicted=0,
> evictedPerRun=0.0 {code}
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