On split, parent region is sticking around in oldest sequenceid to region map
though not online; we don't cleanup WALs.
-----------------------------------------------------------------------------------------------------------------------
Key: HBASE-4789
URL: https://issues.apache.org/jira/browse/HBASE-4789
Project: HBase
Issue Type: Bug
Reporter: stack
Priority: Critical
Here is log for a particular region:
{code}
2011-11-15 05:46:31,382 INFO
org.apache.hadoop.hbase.regionserver.SplitTransaction: Still waiting on the
master to process the split for 8bbd7388262dc8cb1ce2cf4f04a7281d
2011-11-15 05:46:31,483 DEBUG org.apache.hadoop.hbase.zookeeper.ZKAssign:
regionserver:7003-0x1337b0b92cd000a-0x1337b0b92cd000a Attempting to transition
node 8bbd7388262dc8cb1ce2cf4f04a7281d from RS_ZK_REGION_SPLIT to RS_ZK_REG
ION_SPLIT
2011-11-15 05:46:31,484 INFO org.apache.hadoop.hbase.regionserver.SplitRequest:
Region split, META updated, and report to master.
Parent=TestTable,0862220095,1321335865649.8bbd7388262dc8cb1ce2cf4f04a7281d.,
new regions: TestTab
le,0862220095,1321335989689.f00c683df3182d8ef33e315f77ca539c.,
TestTable,0892568091,1321335989689.a56ca1eff5b4401432fcba04b4e851f8.. Split
took 1sec
2011-11-15 05:46:37,705 DEBUG org.apache.hadoop.hbase.regionserver.Store:
Compacting
hdfs://sv4r11s38:7000/hbase/TestTable/a56ca1eff5b4401432fcba04b4e851f8/info/9ce16d8fa94e4938964c04775a6fa1a7.8bbd7388262dc8cb1ce2cf4f04a7281d-
hdfs://sv4r11s38:7000/hbase/TestTable/8bbd7388262dc8cb1ce2cf4f04a7281d/info/9ce16d8fa94e4938964c04775a6fa1a7-top,
keycount=717559, bloomtype=NONE, size=711.1m
2011-11-15 05:46:37,705 DEBUG org.apache.hadoop.hbase.regionserver.Store:
Compacting
hdfs://sv4r11s38:7000/hbase/TestTable/a56ca1eff5b4401432fcba04b4e851f8/info/9213f4d7ee9b4fda857a97603a001f9e.8bbd7388262dc8cb1ce2cf4f04a7281d-
hdfs://sv4r11s38:7000/hbase/TestTable/8bbd7388262dc8cb1ce2cf4f04a7281d/info/9213f4d7ee9b4fda857a97603a001f9e-top,
keycount=416691, bloomtype=NONE, size=412.9m
2011-11-15 05:46:53,090 DEBUG org.apache.hadoop.hbase.regionserver.Store:
Compacting
hdfs://sv4r11s38:7000/hbase/TestTable/f00c683df3182d8ef33e315f77ca539c/info/9ce16d8fa94e4938964c04775a6fa1a7.8bbd7388262dc8cb1ce2cf4f04a7281d-
hdfs://sv4r11s38:7000/hbase/TestTable/8bbd7388262dc8cb1ce2cf4f04a7281d/info/9ce16d8fa94e4938964c04775a6fa1a7-bottom,
keycount=717559, bloomtype=NONE, size=711.1m
2011-11-15 05:46:53,090 DEBUG org.apache.hadoop.hbase.regionserver.Store:
Compacting
hdfs://sv4r11s38:7000/hbase/TestTable/f00c683df3182d8ef33e315f77ca539c/info/9213f4d7ee9b4fda857a97603a001f9e.8bbd7388262dc8cb1ce2cf4f04a7281d-
hdfs://sv4r11s38:7000/hbase/TestTable/8bbd7388262dc8cb1ce2cf4f04a7281d/info/9213f4d7ee9b4fda857a97603a001f9e-bottom,
keycount=416691, bloomtype=NONE, size=412.9m
2011-11-15 05:48:00,690 DEBUG org.apache.hadoop.hbase.regionserver.wal.HLog:
Found 3 hlogs to remove out of total 12; oldest outstanding sequenceid is 5699
from region 8bbd7388262dc8cb1ce2cf4f04a7281d
2011-11-15 05:57:54,083 INFO org.apache.hadoop.hbase.regionserver.wal.HLog: Too
many hlogs: logs=33, maxlogs=32; forcing flush of 1 regions(s):
8bbd7388262dc8cb1ce2cf4f04a7281d
2011-11-15 05:57:54,083 WARN org.apache.hadoop.hbase.regionserver.LogRoller:
Failed to schedule flush of 8bbd7388262dc8cb1ce2cf4f04a7281dr=null,
requester=null
2011-11-15 05:58:01,358 INFO org.apache.hadoop.hbase.regionserver.wal.HLog: Too
many hlogs: logs=34, maxlogs=32; forcing flush of 1 regions(s):
8bbd7388262dc8cb1ce2cf4f04a7281d
2011-11-15 05:58:01,359 WARN org.apache.hadoop.hbase.regionserver.LogRoller:
Failed to schedule flush of 8bbd7388262dc8cb1ce2cf4f04a7281dr=null,
requester=null
{code}
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