ZanderXu created HDFS-16671: ------------------------------- Summary: RBF: RouterRpcFairnessPolicyController supports configurable permit acquire timeout Key: HDFS-16671 URL: https://issues.apache.org/jira/browse/HDFS-16671 Project: Hadoop HDFS Issue Type: Improvement Reporter: ZanderXu Assignee: ZanderXu
RouterRpcFairnessPolicyController supports configurable permit acquire timeout. Hardcode 1s is very long, and it has causes an incident in our prod environment when one nameserivce is busy. And the optimal timeout maybe should be less than p50(avgTime). And all handlers in RBF is waiting to acquire the permit of the busy ns. {code:java} "IPC Server handler 12 on default port 8888" #2370 daemon prio=5 os_prio=0 tid=? nid=? waiting on condition [?] java.lang.Thread.State: TIMED_WAITING (parking) at sun.misc.Unsafe.park(Native Method) - parking to wait for <?> (a java.util.concurrent.Semaphore$NonfairSync) at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215) at java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedNanos(AbstractQueuedSynchronizer.java:1037) at java.util.concurrent.locks.AbstractQueuedSynchronizer.tryAcquireSharedNanos(AbstractQueuedSynchronizer.java:1328) at java.util.concurrent.Semaphore.tryAcquire(Semaphore.java:409) at org.apache.hadoop.hdfs.server.federation.fairness.AbstractRouterRpcFairnessPolicyController.acquirePermit(AbstractRouterRpcFairnessPolicyController.java:56) at org.apache.hadoop.hdfs.server.federation.fairness.DynamicRouterRpcFairnessPolicyController.acquirePermit(DynamicRouterRpcFairnessPolicyController.java:123) at org.apache.hadoop.hdfs.server.federation.router.RouterRpcClient.acquirePermit(RouterRpcClient.java:1500) {code} -- 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