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https://issues.apache.org/jira/browse/HBASE-3028?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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stack updated HBASE-3028:
-------------------------
Attachment: 3028-v4.txt
Here is a complete patch:
{code}
M src/test/java/org/apache/hadoop/hbase/master/TestCatalogJanitor.java
Test of new basescanner (now called catalogjanitor). Mocks up
a 'Server' and a 'MasterServies'. Tests the check for references
and gc'ing of let-go of offlined parent regions.
M src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java
(removeRegionFromMeta): Removed. Users should be going via
MetaEditor instead.
M src/main/java/org/apache/hadoop/hbase/HRegionInfo.java
(isSplitParent): Added.
M src/main/java/org/apache/hadoop/hbase/master/ServerManager.java
Minor formatting
M src/main/java/org/apache/hadoop/hbase/master/CatalogJanitor.java
New chore that runs every 5 minutes. It scans .META. and if
it finds a parent row that is offlined and marked as product of
a split, it will check daughters to see if they have references.
If none, the row is removed and its content in FS is cleaned up.
This is the old 0.20 BaseScanner brought forward into TRUNK
only now it does this one check only (The fixup of dropped
splits is done as part of server shutdown handling in TRUNK).
M src/main/java/org/apache/hadoop/hbase/master/HMaster.java
Added in start and stop of new CatalogJanitor Chore. Also
made a stopServiceThreads to match startServiceThreads. I
moved into this new method from 'run' the stopping of all threads
started in startServiceThreads.
M src/main/java/org/apache/hadoop/hbase/catalog/MetaReader.java
Refactored fullScan so it now works by taking a Visitor. Default
fullScan does as it used to only via a Visitor now. Adding in
this facility means I can use the fullScan code when doing the
catalog janitorial chore.
M src/main/java/org/apache/hadoop/hbase/catalog/MetaEditor.java
(deleteDaughterReferenceInparent): Added.
M src/main/java/org/apache/hadoop/hbase/util/Threads.java
Added a setDaemonThreadRunning override that gets the name to use
from the passed thread.
{code}
> No basescanner means no GC'ing of split, offlined parent regions
> ----------------------------------------------------------------
>
> Key: HBASE-3028
> URL: https://issues.apache.org/jira/browse/HBASE-3028
> Project: HBase
> Issue Type: Bug
> Components: master
> Reporter: stack
> Fix For: 0.90.0
>
> Attachments: 3028-v2.txt, 3028-v4.txt, 3028.txt
>
>
> I need to add back cleanup of split parents probably as a Chore in master.
> Can use new MetaReader code.
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