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Posted to hdfs-issues@hadoop.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2023/12/13 03:15:00 UTC
[jira] [Commented] (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:comment-tabpanel&focusedCommentId=17795986#comment-17795986 ]
ASF GitHub Bot commented on HDFS-17285:
---------------------------------------
slfan1989 commented on code in PR #6347:
URL: https://github.com/apache/hadoop/pull/6347#discussion_r1424800673
##########
hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/RBFConfigKeys.java:
##########
@@ -279,6 +279,10 @@ public class RBFConfigKeys extends CommonConfigurationKeysPublic {
FEDERATION_ROUTER_PREFIX + "safemode.expiration";
public static final long DFS_ROUTER_SAFEMODE_EXPIRATION_DEFAULT =
3 * DFS_ROUTER_CACHE_TIME_TO_LIVE_MS_DEFAULT;
+ public static final String DFS_ROUTER_SAFEMODE_CHECKPERIOD =
Review Comment:
Should we write the unit after the variable? DFS_ROUTER_SAFEMODE_CHECKPERIOD_S?
> 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
> Reporter: liuguanghua
> Priority: Minor
> Labels: pull-request-available
>
> 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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