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From "chunhui shen (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-7507) Make memstore flush be able to retry after exception
Date Mon, 07 Jan 2013 10:38:12 GMT

     [ https://issues.apache.org/jira/browse/HBASE-7507?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

chunhui shen updated HBASE-7507:
--------------------------------

    Description: 
We will abort regionserver if memstore flush throws exception.

I thinks we could do retry to make regionserver more stable because file system may be not
ok in a transient time. e.g. Switching namenode in the NamenodeHA environment



{code}
HRegion#internalFlushcache(){

...
try {
...
}catch(Throwable t){
DroppedSnapshotException dse = new DroppedSnapshotException("region: " +
          Bytes.toStringBinary(getRegionName()));
dse.initCause(t);
throw dse;
}
...

}

MemStoreFlusher#flushRegion(){
...
region.flushcache();
...
 try {
}catch(DroppedSnapshotException ex){
server.abort("Replay of HLog required. Forcing server shutdown", ex);
}

...
}
{code}

  was:
We will abort regionserver if memstore flush throws exception.

I thinks we could do retry to make regionserver more stable because file system may be not
ok in a transient time. e.g. Switching namenode in the NamenodeHA environment

    
> Make memstore flush be able to retry after exception
> ----------------------------------------------------
>
>                 Key: HBASE-7507
>                 URL: https://issues.apache.org/jira/browse/HBASE-7507
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.94.3
>            Reporter: chunhui shen
>            Assignee: chunhui shen
>             Fix For: 0.96.0
>
>
> We will abort regionserver if memstore flush throws exception.
> I thinks we could do retry to make regionserver more stable because file system may be
not ok in a transient time. e.g. Switching namenode in the NamenodeHA environment
> {code}
> HRegion#internalFlushcache(){
> ...
> try {
> ...
> }catch(Throwable t){
> DroppedSnapshotException dse = new DroppedSnapshotException("region: " +
>           Bytes.toStringBinary(getRegionName()));
> dse.initCause(t);
> throw dse;
> }
> ...
> }
> MemStoreFlusher#flushRegion(){
> ...
> region.flushcache();
> ...
>  try {
> }catch(DroppedSnapshotException ex){
> server.abort("Replay of HLog required. Forcing server shutdown", ex);
> }
> ...
> }
> {code}

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