Wei Yan created HDFS-13198:
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Summary: RBF: RouterHeartbeatService throws out CahcedStateStore
related exceptions when starting router
Key: HDFS-13198
URL: https://issues.apache.org/jira/browse/HDFS-13198
Project: Hadoop HDFS
Issue Type: Sub-task
Reporter: Wei Yan
Assignee: Wei Yan
Exception looks like:
{code:java}
2018-02-23 19:04:56,341 ERROR router.RouterHeartbeatService: Cannot get version
for class org.apache.hadoop.hdfs.server.federation.store.MembershipStore:
Cached State Store not initialized, MembershipState records not valid
2018-02-23 19:04:56,341 ERROR router.RouterHeartbeatService: Cannot get version
for class org.apache.hadoop.hdfs.server.federation.store.MountTableStore:
Cached State Store not initialized, MountTable records not valid
Exception in thread "Router Heartbeat Async" java.lang.NullPointerException
at
org.apache.hadoop.hdfs.server.federation.store.driver.impl.StateStoreSerializableImpl.serialize(StateStoreSerializableImpl.java:60)
at
org.apache.hadoop.hdfs.server.federation.store.driver.impl.StateStoreZooKeeperImpl.putAll(StateStoreZooKeeperImpl.java:191)
at
org.apache.hadoop.hdfs.server.federation.store.driver.impl.StateStoreBaseImpl.put(StateStoreBaseImpl.java:75)
at
org.apache.hadoop.hdfs.server.federation.store.impl.RouterStoreImpl.routerHeartbeat(RouterStoreImpl.java:88)
at
org.apache.hadoop.hdfs.server.federation.router.RouterHeartbeatService.updateStateStore(RouterHeartbeatService.java:95)
at
org.apache.hadoop.hdfs.server.federation.router.RouterHeartbeatService.access$000(RouterHeartbeatService.java:43)
at
org.apache.hadoop.hdfs.server.federation.router.RouterHeartbeatService$1.run(RouterHeartbeatService.java:68)
at java.lang.Thread.run(Thread.java:748){code}
This is because, during starting the Router, the CachedStateStore hasn't been
initialized and cannot serve requests. Although the router will still be
started, it would be better to fix the exceptions.
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