[
https://issues.apache.org/jira/browse/HDFS-14346?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Chao Sun updated HDFS-14346:
----------------------------
Status: Patch Available (was: Open)
> EditLogTailer loses precision for sub-second edit log tailing and rolling
> interval
> ----------------------------------------------------------------------------------
>
> Key: HDFS-14346
> URL: https://issues.apache.org/jira/browse/HDFS-14346
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode
> Reporter: Chao Sun
> Assignee: Chao Sun
> Priority: Minor
> Attachments: HDFS-14346.000.patch
>
>
> {{EditLogTailer}} currently uses the following:
> {code}
> logRollPeriodMs = conf.getTimeDuration(
> DFSConfigKeys.DFS_HA_LOGROLL_PERIOD_KEY,
> DFSConfigKeys.DFS_HA_LOGROLL_PERIOD_DEFAULT, TimeUnit.SECONDS) * 1000;
> sleepTimeMs = conf.getTimeDuration(
> DFSConfigKeys.DFS_HA_TAILEDITS_PERIOD_KEY,
> DFSConfigKeys.DFS_HA_TAILEDITS_PERIOD_DEFAULT, TimeUnit.SECONDS) *
> 1000;
> {code}
> to determine the edit log roll and tail frequency. However, if user specify
> sub-second frequency, such as {{100ms}}, it will lose precision and become
> 0s. This is not ideal for some scenarios such as standby reads (HDFS-12943).
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
