[
https://issues.apache.org/jira/browse/HBASE-16455?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15427938#comment-15427938
]
Ted Yu commented on HBASE-16455:
--------------------------------
The following log was obtained when I worked on HBASE-14450:
{code}
2016-08-18 19:12:33,355 INFO
[rs(192.168.0.14,52286,1471572715945)-backup-pool19-thread-1]
regionserver.LogRollBackupSubprocedure$RSRollLogTask(80): Trying to roll log in
backup subprocedure, current log number: 1471572720163 highest:
1471572748368 on 192.168.0.14,52286,1471572715945
{code}
1471572720163 was the filenum for the WAL returned by getWAL(null).
1471572748368 was the highest filenum obtained by iterating all outstanding WAL
files.
> Provide API for obtaining highest file number among all the WAL files
> ---------------------------------------------------------------------
>
> Key: HBASE-16455
> URL: https://issues.apache.org/jira/browse/HBASE-16455
> Project: HBase
> Issue Type: Improvement
> Reporter: Ted Yu
> Assignee: Ted Yu
> Attachments: 16455.v1.txt
>
>
> Currently RegionServerServices has the following API:
> {code}
> WAL getWAL(HRegionInfo regionInfo) throws IOException;
> {code}
> Caller can only obtain filenum for a specific WAL.
> When multi wal is in use, we should add API for obtaining highest file number
> among all the outstanding WAL files.
> User can pass null to getWAL() method above, but the filenum for the returned
> WAL may not be the highest among all the WAL files.
> See log snippet in the first comment.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
