[jira] [Updated] (HDFS-17309) RBF: Fix Router Safemode check contidition error
[ https://issues.apache.org/jira/browse/HDFS-17309?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Shilun Fan updated HDFS-17309: -- Component/s: rbf > RBF: Fix Router Safemode check contidition error > > > Key: HDFS-17309 > URL: https://issues.apache.org/jira/browse/HDFS-17309 > Project: Hadoop HDFS > Issue Type: Bug > Components: rbf >Affects Versions: 3.4.0 >Reporter: liuguanghua >Assignee: liuguanghua >Priority: Major > Labels: pull-request-available > Fix For: 3.4.0 > > > With HDFS-17116, Router safemode check contidition use monotonicNow(). > For code in RouterSafemodeService.periodicInvoke() > long now = monotonicNow(); > long cacheUpdateTime = stateStore.getCacheUpdateTime(); > boolean isCacheStale = (now - cacheUpdateTime) > this.staleInterval; > > Function monotonicNow() is implemented with System.nanoTime(). > System.nanoTime() in javadoc description: > This method can only be used to measure elapsed time and is not related to > any other notion of system or wall-clock time. The value returned represents > nanoseconds since some fixed but arbitrary origin time (perhaps in the > future, so values may be negative). > > The following situation maybe exists ： > If refreshCaches not success in the beginning, cacheUpdateTime will be 0 , > and now - cacheUpdateTime is arbitrary origin time，so isCacheStale maybe be > true or false. -- This message was sent by Atlassian Jira (v8.20.10#820010) - To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org
[jira] [Updated] (HDFS-17309) RBF: Fix Router Safemode check contidition error
[ https://issues.apache.org/jira/browse/HDFS-17309?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Shilun Fan updated HDFS-17309: -- Affects Version/s: 3.4.0 > RBF: Fix Router Safemode check contidition error > > > Key: HDFS-17309 > URL: https://issues.apache.org/jira/browse/HDFS-17309 > Project: Hadoop HDFS > Issue Type: Bug >Affects Versions: 3.4.0 >Reporter: liuguanghua >Assignee: liuguanghua >Priority: Major > Labels: pull-request-available > Fix For: 3.4.0 > > > With HDFS-17116, Router safemode check contidition use monotonicNow(). > For code in RouterSafemodeService.periodicInvoke() > long now = monotonicNow(); > long cacheUpdateTime = stateStore.getCacheUpdateTime(); > boolean isCacheStale = (now - cacheUpdateTime) > this.staleInterval; > > Function monotonicNow() is implemented with System.nanoTime(). > System.nanoTime() in javadoc description: > This method can only be used to measure elapsed time and is not related to > any other notion of system or wall-clock time. The value returned represents > nanoseconds since some fixed but arbitrary origin time (perhaps in the > future, so values may be negative). > > The following situation maybe exists ： > If refreshCaches not success in the beginning, cacheUpdateTime will be 0 , > and now - cacheUpdateTime is arbitrary origin time，so isCacheStale maybe be > true or false. -- This message was sent by Atlassian Jira (v8.20.10#820010) - To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org
[jira] [Updated] (HDFS-17309) RBF: Fix Router Safemode check contidition error
[ https://issues.apache.org/jira/browse/HDFS-17309?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Íñigo Goiri updated HDFS-17309: --- Summary: RBF: Fix Router Safemode check contidition error (was: Fix Router Safemode check contidition error) > RBF: Fix Router Safemode check contidition error > > > Key: HDFS-17309 > URL: https://issues.apache.org/jira/browse/HDFS-17309 > Project: Hadoop HDFS > Issue Type: Bug >Reporter: liuguanghua >Priority: Major > Labels: pull-request-available > > With HDFS-17116, Router safemode check contidition use monotonicNow(). > For code in RouterSafemodeService.periodicInvoke() > long now = monotonicNow(); > long cacheUpdateTime = stateStore.getCacheUpdateTime(); > boolean isCacheStale = (now - cacheUpdateTime) > this.staleInterval; > > Function monotonicNow() is implemented with System.nanoTime(). > System.nanoTime() in javadoc description: > This method can only be used to measure elapsed time and is not related to > any other notion of system or wall-clock time. The value returned represents > nanoseconds since some fixed but arbitrary origin time (perhaps in the > future, so values may be negative). > > The following situation maybe exists ： > If refreshCaches not success in the beginning, cacheUpdateTime will be 0 , > and now - cacheUpdateTime is arbitrary origin time，so isCacheStale maybe be > true or false. -- This message was sent by Atlassian Jira (v8.20.10#820010) - To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org
