Ashu Pachauri created HBASE-17892:
-------------------------------------
Summary: Hierarchical paths for WALs
Key: HBASE-17892
URL: https://issues.apache.org/jira/browse/HBASE-17892
Project: HBase
Issue Type: Improvement
Components: Replication, wal
Reporter: Ashu Pachauri
Currently all WALs are just dumped into a single directory irrespective of the
ServerName for the regionserver to which they belong.
This is a problem specifically for the WALs archive directory
(HConstants.HREGION_OLDLOGDIR_NAME) since it holds a large number of files
which can easily make it go above the HDFS max items in a directory limit for
large clusters in scenarios like pausing replication. HDFS imposes a hard limit
of around 6 million files in a single directory due to Protobuf serialization
limitations.
We should put WALs for a particular servername in its own directory inside the
WALs (archive) directory.
--
This message was sent by Atlassian JIRA
(v6.3.15#6346)
