liuguanghua created HDFS-17309: ---------------------------------- Summary: 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
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-dev-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-dev-h...@hadoop.apache.org