[ 
https://issues.apache.org/jira/browse/HBASE-21844?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16767840#comment-16767840
 ] 

Duo Zhang commented on HBASE-21844:
-----------------------------------

I think HBASE-21890 may be the criminal that why we can not make progress here.

Let's resolve it then you can try your workload again to see if this time there 
are some exceptions printed.

And let me see the logs.

> Master could get stuck in initializing state while waiting for meta
> -------------------------------------------------------------------
>
>                 Key: HBASE-21844
>                 URL: https://issues.apache.org/jira/browse/HBASE-21844
>             Project: HBase
>          Issue Type: Bug
>          Components: master, meta
>    Affects Versions: 3.0.0
>            Reporter: Bahram Chehrazy
>            Assignee: Bahram Chehrazy
>            Priority: Major
>         Attachments: 
> 0001-HBASE-21844-Handling-incorrect-Meta-state-on-Zookeep.patch
>
>
> If the active master crashes after meta server dies, there is a slight chance 
> of master getting into a state where the ZK says meta is OPEN, but the server 
> is dead and there is no active SCP to recover it (perhaps the SCP has aborted 
> and the procWALs were corrupted). In this case the waitForMetaOnline never 
> returns.
>  
> We've seen this happening a few times when there had been a temporary HDFS 
> outage. Following log lines shows this state.
>  
> 2019-01-17 18:55:48,497 WARN  [master/************:16000:becomeActiveMaster] 
> master.HMaster: hbase:meta,,1.1588230740 is NOT online; state=
> {1588230740 *state=*OPEN**, ts=1547780128227, 
> server=*************,16020,1547776821322}
> ; *ServerCrashProcedures=false*. Master startup cannot progress, in 
> holding-pattern until region onlined.
>  
> I'm still investigating why and how to prevent getting into this bad state, 
> but nevertheless the master should be able to recover during a restart by 
> initiating a new SCP to fix the meta.
>  
>  



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)

Reply via email to