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Posted to hdfs-issues@hadoop.apache.org by "Shilun Fan (Jira)" <ji...@apache.org> on 2024/01/27 01:09:00 UTC
[jira] [Updated] (HDFS-17285) RBF: Add a safe mode check period configuration
[ https://issues.apache.org/jira/browse/HDFS-17285?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Shilun Fan updated HDFS-17285:
------------------------------
Component/s: rbf
> RBF: Add a safe mode check period configuration
> -----------------------------------------------
>
> Key: HDFS-17285
> URL: https://issues.apache.org/jira/browse/HDFS-17285
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: rbf
> Affects Versions: 3.4.0
> Reporter: liuguanghua
> Assignee: liuguanghua
> Priority: Minor
> Labels: pull-request-available
> Fix For: 3.4.0
>
>
> When dfsrouter start, it enters safe mode. And it will cost 1min to leave.
> The log is blow:
> 14:35:23,717 INFO org.apache.hadoop.hdfs.server.federation.router.RouterSafemodeService: Leave startup safe mode after 30000 ms
> 14:35:23,717 INFO org.apache.hadoop.hdfs.server.federation.router.RouterSafemodeService: Enter safe mode after 180000 ms without reaching the State Store
> 14:35:23,717 INFO org.apache.hadoop.hdfs.server.federation.router.RouterSafemodeService: Entering safe mode
> 14:35:24,996 INFO org.apache.hadoop.hdfs.server.federation.router.RouterSafemodeService: Delaying safemode exit for 28721 milliseconds...
> 14:36:25,037 INFO org.apache.hadoop.hdfs.server.federation.router.RouterSafemodeService: Leaving safe mode after 61319 milliseconds
> It depends on these configs.
> DFS_ROUTER_SAFEMODE_EXTENSION 30s
> DFS_ROUTER_SAFEMODE_EXPIRATION 3min
> DFS_ROUTER_CACHE_TIME_TO_LIVE_MS 1min (it is the period for check safe mode)
> Because in safe mode dfsrouter will reject write requests, so it should be shorter in check period if refreshCaches is done. And we should remove DFS_ROUTER_CACHE_TIME_TO_LIVE_MS form RouterSafemodeService.
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