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Posted to dev@hbase.apache.org by "Michael Stack (Jira)" <ji...@apache.org> on 2020/11/16 17:03:00 UTC

[jira] [Resolved] (HBASE-25280) [meta replicas] ArrayIndexOutOfBoundsException in ZKConnectionRegistry

     [ https://issues.apache.org/jira/browse/HBASE-25280?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael Stack resolved HBASE-25280.
-----------------------------------
    Hadoop Flags: Reviewed
      Resolution: Fixed

Merged to feature branches, HBASE-18070 and HBASE-18070.branch-2. Thanks for reviews [~huaxiangsun]  and [~zhangduo]

> [meta replicas] ArrayIndexOutOfBoundsException in ZKConnectionRegistry
> ----------------------------------------------------------------------
>
>                 Key: HBASE-25280
>                 URL: https://issues.apache.org/jira/browse/HBASE-25280
>             Project: HBase
>          Issue Type: Bug
>          Components: meta replicas
>    Affects Versions: HBASE-18070
>            Reporter: Michael Stack
>            Assignee: Michael Stack
>            Priority: Major
>             Fix For: HBASE-18070, HBASE-18070.branch-2
>
>
> ITBLL Testing HBASE-18070 feature, [~huaxiangsun] found this:
> {code:java}
> 2020-11-12 19:48:12,358 ERROR org.apache.hadoop.hbase.util.FutureUtils: Unexpected error caught when processing CompletableFuturejava.lang.ArrayIndexOutOfBoundsException: Index 3 out of bounds for length 3     at org.apache.hadoop.hbase.client.ZKConnectionRegistry.lambda$getMetaRegionLocation$2(ZKConnectionRegistry.java:180)     at org.apache.hadoop.hbase.util.FutureUtils.lambda$addListener$0(FutureUtils.java:68)     at java.base/java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:859)     at java.base/java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:837)     at java.base/java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:506)     at java.base/java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:2073)     at org.apache.hadoop.hbase.client.ZKConnectionRegistry.lambda$getAndConvert$0(ZKConnectionRegistry.java:78)     at org.apache.hadoop.hbase.util.FutureUtils.lambda$addListener$0(FutureUtils.java:68)     at java.base/java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:859)     at java.base/java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:837)     at java.base/java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:506)     at java.base/java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:2073)     at org.apache.hadoop.hbase.zookeeper.ReadOnlyZKClient$ZKTask$1.exec(ReadOnlyZKClient.java:174)     at org.apache.hadoop.hbase.zookeeper.ReadOnlyZKClient.run(ReadOnlyZKClient.java:342)    at java.base/java.lang.Thread.run(Thread.java:834) {code}
> The code has been this way a long time but his running with four replicas seems to have revealed a race exposed by using replicaid as index.



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