Duo Zhang created HBASE-22477:
---------------------------------
Summary: Throwing exception when meta region is not in OPEN state
in client registry may crash a naster
Key: HBASE-22477
URL: https://issues.apache.org/jira/browse/HBASE-22477
Project: HBase
Issue Type: Bug
Components: Client, master, meta
Reporter: Duo Zhang
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2019-05-26 17:10:31,195 ERROR [master/asf906:0:becomeActiveMaster]
helpers.MarkerIgnoringBase(159): Failed to become active master
org.apache.hadoop.hbase.client.RetriesExhaustedException: Cannot get the
location for replica0 of region for in hbase:meta
at
org.apache.hadoop.hbase.client.RpcRetryingCallerWithReadReplicas.getRegionLocations(RpcRetryingCallerWithReadReplicas.java:335)
at
org.apache.hadoop.hbase.client.ScannerCallableWithReplicas.call(ScannerCallableWithReplicas.java:153)
at
org.apache.hadoop.hbase.client.ScannerCallableWithReplicas.call(ScannerCallableWithReplicas.java:58)
at
org.apache.hadoop.hbase.client.RpcRetryingCallerImpl.callWithoutRetries(RpcRetryingCallerImpl.java:192)
at
org.apache.hadoop.hbase.client.ClientScanner.call(ClientScanner.java:263)
at
org.apache.hadoop.hbase.client.ClientScanner.loadCache(ClientScanner.java:405)
at
org.apache.hadoop.hbase.client.ClientScanner.nextWithSyncCache(ClientScanner.java:285)
at
org.apache.hadoop.hbase.client.ClientScanner.next(ClientScanner.java:564)
at
org.apache.hadoop.hbase.MetaTableAccessor.scanMeta(MetaTableAccessor.java:766)
at
org.apache.hadoop.hbase.MetaTableAccessor.scanMeta(MetaTableAccessor.java:734)
at
org.apache.hadoop.hbase.MetaTableAccessor.scanMeta(MetaTableAccessor.java:690)
at
org.apache.hadoop.hbase.MetaTableAccessor.fullScanRegions(MetaTableAccessor.java:220)
at
org.apache.hadoop.hbase.master.assignment.RegionStateStore.visitMeta(RegionStateStore.java:77)
at
org.apache.hadoop.hbase.master.assignment.AssignmentManager.loadMeta(AssignmentManager.java:1294)
at
org.apache.hadoop.hbase.master.assignment.AssignmentManager.joinCluster(AssignmentManager.java:1255)
at
org.apache.hadoop.hbase.master.HMaster.finishActiveMasterInitialization(HMaster.java:1100)
at
org.apache.hadoop.hbase.master.HMaster.startActiveMasterManager(HMaster.java:2375)
at org.apache.hadoop.hbase.master.HMaster.lambda$run$0(HMaster.java:605)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.io.IOException: Meta region is in state OPENING
at
org.apache.hadoop.hbase.client.ZKAsyncRegistry.lambda$getMetaRegionLocation$1(ZKAsyncRegistry.java:162)
at
org.apache.hadoop.hbase.util.FutureUtils.lambda$addListener$0(FutureUtils.java:70)
at
java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:760)
at
java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:736)
at
java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:474)
at
java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:1962)
at
org.apache.hadoop.hbase.client.ZKAsyncRegistry.lambda$getAndConvert$0(ZKAsyncRegistry.java:81)
at
org.apache.hadoop.hbase.util.FutureUtils.lambda$addListener$0(FutureUtils.java:70)
at
java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:760)
at
java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:736)
at
java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:474)
at
java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:1962)
at
org.apache.hadoop.hbase.zookeeper.ReadOnlyZKClient$ZKTask$1.exec(ReadOnlyZKClient.java:174)
at
org.apache.hadoop.hbase.zookeeper.ReadOnlyZKClient.run(ReadOnlyZKClient.java:342)
... 1 more
{noformat}
I think the logic is introduced at the time that we do not change the state of
meta region on zk. But now, we will change the state of meta region, so maybe
we should remove the logic.
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