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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-19904) Find a better way to deal with the cyclic dependency when initializing WAL and Replication
Date Thu, 01 Feb 2018 06:37:00 GMT

    [ https://issues.apache.org/jira/browse/HBASE-19904?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16348090#comment-16348090
] 

stack commented on HBASE-19904:
-------------------------------

The netty test should be fixed. Others are MR?

Saw this



Thread 448 (Time-limited test-EventThread):
  State: BLOCKED
  Blocked count: 7
  Waited count: 5
  Blocked on org.apache.log4j.spi.RootLogger@79e37681
  Blocked by 410 (Time-limited test-EventThread)
  Stack:
    org.apache.log4j.Category.callAppenders(Category.java:205)
    org.apache.log4j.Category.forcedLog(Category.java:391)
    org.apache.log4j.Category.log(Category.java:856)
    org.slf4j.impl.Log4jLoggerAdapter.error(Log4jLoggerAdapter.java:576)
    org.slf4j.helpers.MarkerIgnoringBase.error(MarkerIgnoringBase.java:159)
    org.apache.hadoop.hbase.regionserver.HRegionServer.abort(HRegionServer.java:2338)
    org.apache.hadoop.hbase.MiniHBaseCluster$MiniHBaseClusterRegionServer.abortRegionServer(MiniHBaseCluster.java:208)
    org.apache.hadoop.hbase.MiniHBaseCluster$MiniHBaseClusterRegionServer.access$200(MiniHBaseCluster.java:133)
    org.apache.hadoop.hbase.MiniHBaseCluster$MiniHBaseClusterRegionServer$2.run(MiniHBaseCluster.java:201)
    java.security.AccessController.doPrivileged(Native Method)
    javax.security.auth.Subject.doAs(Subject.java:360)
    org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1726)
    org.apache.hadoop.hbase.security.User$SecureHadoopUser.runAs(User.java:307)
    org.apache.hadoop.hbase.MiniHBaseCluster$MiniHBaseClusterRegionServer.abort(MiniHBaseCluster.java:198)
    org.apache.hadoop.hbase.zookeeper.ZKWatcher.connectionEvent(ZKWatcher.java:520)
    org.apache.hadoop.hbase.zookeeper.ZKWatcher.process(ZKWatcher.java:452)
    org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:530)
    org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:505)
  Inactive



Didn't see the usual blocked on HMaster.... Will look again in morning.

> Find a better way to deal with the cyclic dependency when initializing WAL and Replication
> ------------------------------------------------------------------------------------------
>
>                 Key: HBASE-19904
>                 URL: https://issues.apache.org/jira/browse/HBASE-19904
>             Project: HBase
>          Issue Type: Improvement
>          Components: Replication, wal
>            Reporter: Duo Zhang
>            Assignee: Duo Zhang
>            Priority: Major
>             Fix For: 2.0.0-beta-2
>
>         Attachments: HBASE-19904-v3.patch
>
>
> When implementing synchronous replication, I found that we need to depend more on replication
in WAL so it is even more pain...



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