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From Gaojinchao <gaojinc...@huawei.com>
Subject Hmaster has some warn logs.
Date Thu, 05 May 2011 12:40:53 GMT
In our test cluster. There is a lot of logs for socket timeout.
I try to dig it, but nothing.
Who have a clue? Thanks.

Hbase version : 0.90.2

Logs:
2011-05-04 05:13:05,856 WARN org.apache.hadoop.hbase.master.CatalogJanitor: Failed scan of
catalog table
java.net.SocketTimeoutException: Call to /10.85.129.177:60020 failed on socket timeout exception:
java.net.SocketTimeoutException: 60000 millis timeout while waiting for channel to be ready
for read. ch : java.nio.channels.SocketChannel[connected local=/10.85.129.177:54980 remote=/10.85.129.177:60020]
	at org.apache.hadoop.hbase.ipc.HBaseClient.wrapException(HBaseClient.java:802)
	at org.apache.hadoop.hbase.ipc.HBaseClient.call(HBaseClient.java:775)
	at org.apache.hadoop.hbase.ipc.HBaseRPC$Invoker.invoke(HBaseRPC.java:257)
	at $Proxy6.getRegionInfo(Unknown Source)
	at org.apache.hadoop.hbase.catalog.CatalogTracker.verifyRegionLocation(CatalogTracker.java:424)
	at org.apache.hadoop.hbase.catalog.CatalogTracker.getMetaServerConnection(CatalogTracker.java:272)
	at org.apache.hadoop.hbase.catalog.CatalogTracker.waitForMeta(CatalogTracker.java:331)
	at org.apache.hadoop.hbase.catalog.CatalogTracker.waitForMetaServerConnectionDefault(CatalogTracker.java:364)
	at org.apache.hadoop.hbase.catalog.MetaReader.fullScan(MetaReader.java:255)
	at org.apache.hadoop.hbase.catalog.MetaReader.fullScan(MetaReader.java:237)
	at org.apache.hadoop.hbase.master.CatalogJanitor.scan(CatalogJanitor.java:116)
	at org.apache.hadoop.hbase.master.CatalogJanitor.chore(CatalogJanitor.java:85)
	at org.apache.hadoop.hbase.Chore.run(Chore.java:66)
Caused by: java.net.SocketTimeoutException: 60000 millis timeout while waiting for channel
to be ready for read. ch : java.nio.channels.SocketChannel[connected local=/10.85.129.177:54980
remote=/10.85.129.177:60020]
	at org.apache.hadoop.net.SocketIOWithTimeout.doIO(SocketIOWithTimeout.java:165)
	at org.apache.hadoop.net.SocketInputStream.read(SocketInputStream.java:155)
	at org.apache.hadoop.net.SocketInputStream.read(SocketInputStream.java:128)
	at java.io.FilterInputStream.read(FilterInputStream.java:116)
	at org.apache.hadoop.hbase.ipc.HBaseClient$Connection$PingInputStream.read(HBaseClient.java:299)
	at java.io.BufferedInputStream.fill(BufferedInputStream.java:218)
	at java.io.BufferedInputStream.read(BufferedInputStream.java:237)
	at java.io.DataInputStream.readInt(DataInputStream.java:370)
	at org.apache.hadoop.hbase.ipc.HBaseClient$Connection.receiveResponse(HBaseClient.java:539)
	at org.apache.hadoop.hbase.ipc.HBaseClient$Connection.run(HBaseClient.java:477)

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