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From Jean-Daniel Cryans <jdcry...@apache.org>
Subject Re: Backup Master not started?
Date Wed, 03 Aug 2011 18:05:38 GMT
Have them use the same configuration?

J-D

On Wed, Aug 3, 2011 at 7:17 AM, shanmuganathan.r
<shanmuganathan.r@zohocorp.com> wrote:
> Hi Jean,
>
>            The Problem is continued even the Active master is properly killed.
How can we make the Active master and backup master  use the same zookeeper ensemble.
>
> Regards,
>
> Shanmuganathan
>
>
>
> ---- On Tue, 02 Aug 2011 22:42:10 +0530 Jean-Daniel Cryans&lt;jdcryans@apache.org&gt;
wrote ----
>
>
> Like it says, the backup master is waiting for the primary one to
> create the znode as in it considers it's not even running yet. If your
> primary node is indeed running correctly, it could mean that they
> aren't using the same Zookeeper ensemble or root znode.
>
> Check that first.
>
> J-D
>
> On Tue, Aug 2, 2011 at 4:12 AM, shanmuganathan.r
> &lt;shanmuganathan.r@zohocorp.com&gt; wrote:
> &gt; Hi All,
> &gt;
> &gt;      I have the problem in my HBase fully distributed mode with backup master
. The HBase in the fully distributed mode is starting and working properly. The Active Master
is working and My backup master is waiting for the active master termination. If I kill the
active master process, the backup master don't come to active which remains in the waiting
state.
> &gt;
> &gt;
> &gt;      I declared the backup master in the HBase/conf/Backup-masters file.
> &gt;
> &gt;
> &gt;      My backup master log is
> &gt; 2011-08-02 16:04:16,416 INFO org.apache.hadoop.hbase.metrics: MetricsString
added: revision
> &gt; 2011-08-02 16:04:16,416 INFO org.apache.hadoop.hbase.metrics: MetricsString
added: hdfsUser
> &gt; 2011-08-02 16:04:16,416 INFO org.apache.hadoop.hbase.metrics: MetricsString
added: hdfsDate
> &gt; 2011-08-02 16:04:16,416 INFO org.apache.hadoop.hbase.metrics: MetricsString
added: hdfsUrl
> &gt; 2011-08-02 16:04:16,416 INFO org.apache.hadoop.hbase.metrics: MetricsString
added: date
> &gt; 2011-08-02 16:04:16,416 INFO org.apache.hadoop.hbase.metrics: MetricsString
added: hdfsRevision
> &gt; 2011-08-02 16:04:16,416 INFO org.apache.hadoop.hbase.metrics: MetricsString
added: user
> &gt; 2011-08-02 16:04:16,416 INFO org.apache.hadoop.hbase.metrics: MetricsString
added: hdfsVersion
> &gt; 2011-08-02 16:04:16,416 INFO org.apache.hadoop.hbase.metrics: MetricsString
added: url
> &gt; 2011-08-02 16:04:16,416 INFO org.apache.hadoop.hbase.metrics: MetricsString
added: version
> &gt; 2011-08-02 16:04:16,416 INFO org.apache.hadoop.hbase.metrics: new MBeanInfo
> &gt; 2011-08-02 16:04:16,417 INFO org.apache.hadoop.hbase.metrics: new MBeanInfo
> &gt; 2011-08-02 16:04:16,417 INFO org.apache.hadoop.hbase.master.metrics.MasterMetrics:
Initialized
> &gt; 2011-08-02 16:04:16,418 DEBUG org.apache.hadoop.hbase.master.HMaster: HMaster
started in backup mode.  Stalling until master znode is written.
> &gt; 2011-08-02 16:04:16,418 DEBUG org.apache.hadoop.hbase.master.HMaster: Waiting
for master address ZNode to be written (Also watching cluster state node)
> &gt; 2011-08-02 16:07:16,418 DEBUG org.apache.hadoop.hbase.master.HMaster: Waiting
for master address ZNode to be written (Also watching cluster state node)
> &gt; 2011-08-02 16:10:16,418 DEBUG org.apache.hadoop.hbase.master.HMaster: Waiting
for master address ZNode to be written (Also watching cluster state node)
> &gt; 2011-08-02 16:13:16,418 DEBUG org.apache.hadoop.hbase.master.HMaster: Waiting
for master address ZNode to be written (Also watching cluster state node)
> &gt;
> &gt;
> &gt; --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
> &gt;
> &gt;
> &gt;      And the one of my region server log is
> &gt;
> &gt;
> &gt; 2011-08-02 16:21:45,977 DEBUG org.apache.hadoop.hbase.io.hfile.LruBlockCache:
LRU Stats: total=958.41 KB, free=198.43 MB, max=199.36 MB, blocks=1, accesses=10, hits=9,
hitRatio=89.99%%, cachingAccesses=10, cachingHits=9, cachingHitsRatio=89.99%%, evictions=0,
evicted=0, evictedPerRun=NaN
> &gt; 2011-08-02 16:22:40,714 WARN org.apache.hadoop.hbase.regionserver.HRegionServer:
Unable to connect to master. Retrying. Error was:
> &gt; java.net.ConnectException: Connection refused
> &gt;        at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
> &gt;        at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:592)
> &gt;        at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206)
> &gt;        at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:404)
> &gt;        at org.apache.hadoop.hbase.ipc.HBaseClient$Connection.setupIOstreams(HBaseClient.java:328)
> &gt;        at org.apache.hadoop.hbase.ipc.HBaseClient.getConnection(HBaseClient.java:883)
> &gt;        at org.apache.hadoop.hbase.ipc.HBaseClient.call(HBaseClient.java:750)
> &gt;        at org.apache.hadoop.hbase.ipc.HBaseRPC$Invoker.invoke(HBaseRPC.java:257)
> &gt;        at $Proxy5.getProtocolVersion(Unknown Source)
> &gt;        at org.apache.hadoop.hbase.ipc.HBaseRPC.getProxy(HBaseRPC.java:419)
> &gt;        at org.apache.hadoop.hbase.ipc.HBaseRPC.getProxy(HBaseRPC.java:393)
> &gt;        at org.apache.hadoop.hbase.ipc.HBaseRPC.getProxy(HBaseRPC.java:444)
> &gt;        at org.apache.hadoop.hbase.ipc.HBaseRPC.waitForProxy(HBaseRPC.java:349)
> &gt;        at org.apache.hadoop.hbase.regionserver.HRegionServer.getMaster(HRegionServer.java:1445)
> &gt;        at org.apache.hadoop.hbase.regionserver.HRegionServer.tryRegionServerReport(HRegionServer.java:737)
> &gt;        at org.apache.hadoop.hbase.regionserver.HRegionServer.run(HRegionServer.java:586)
> &gt;        at java.lang.Thread.run(Thread.java:636)
> &gt;
> &gt;
> &gt;
> &gt; --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
> &gt;
> &gt;
> &gt; 1. How can we solve this problem?
> &gt;
> &gt;
> &gt; 2. Is there any extra configuration needed for this backup master configuration
in HBase?
> &gt;
> &gt;
> &gt;                                                    
 Thanks for your valuable suggestions ......!
> &gt;
> &gt;
> &gt; Regards,
> &gt;
> &gt; Shanmuganathan
> &gt;
> &gt;
> &gt;
> &gt;
>
>
>

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