Liu Shaohui created HBASE-14247:
-----------------------------------
Summary: Separate the old WALs into different regionserver
directories
Key: HBASE-14247
URL: https://issues.apache.org/jira/browse/HBASE-14247
Project: HBase
Issue Type: Improvement
Reporter: Liu Shaohui
Assignee: Liu Shaohui
Priority: Minor
Currently all old WALs of regionservers are achieved into the single directory
of oldWALs. In big clusters, because of long TTL of WAL or disabled
replications, the number of files under oldWALs may reach the
max-directory-items limit of HDFS, which will make the hbase cluster crashed.
```
Caused by:
org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.hdfs.protocol.FSLimitException$MaxDirectoryItemsExceededException):
The directory item limit of /hbase/lgprc-xiaomi/.oldlogs is exceeded:
limit=1048576 items=1048576
```
A simple solution is to separate the old WALs into different directories
according to the server name of the WAL.
Suggestions are welcomed~ Thanks
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