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https://issues.apache.org/jira/browse/HBASE-17892?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ashu Pachauri resolved HBASE-17892.
-----------------------------------
Resolution: Duplicate
Closing this as duplicate because HBASE-14247 is actively being worked on which
solves the same issue.
> 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.
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