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https://issues.apache.org/jira/browse/HBASE-10029?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13832272#comment-13832272
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Ted Yu edited comment on HBASE-10029 at 11/26/13 3:33 AM:
----------------------------------------------------------
>From createReorderingProxy():
{code}
return (ClientProtocol) Proxy.newProxyInstance
(cp.getClass().getClassLoader(),
new Class[]{ClientProtocol.class, Closeable.class},
{code}
What I don't understand is why IllegalArgumentException wasn't thrown from
Proxy.newProxyInstance() in createReorderingProxy() if the proxy doesn't
implement Closeable.
See line 369 here:
http://grepcode.com/file/repository.grepcode.com/java/root/jdk/openjdk/6-b14/java/lang/reflect/Proxy.java#Proxy.getProxyClass%28java.lang.ClassLoader%2Cjava.lang.Class%5B%5D%29
was (Author: [email protected]):
What I don't understand is why IllegalArgumentException wasn't thrown from
Proxy.newProxyInstance() if the proxy doesn't implement Closeable.
See line 369 here:
http://grepcode.com/file/repository.grepcode.com/java/root/jdk/openjdk/6-b14/java/lang/reflect/Proxy.java#Proxy.getProxyClass%28java.lang.ClassLoader%2Cjava.lang.Class%5B%5D%29
> Proxy created by HFileSystem#createReorderingProxy() should implement
> Closeable when connect to HA namenode
> -----------------------------------------------------------------------------------------------------------
>
> Key: HBASE-10029
> URL: https://issues.apache.org/jira/browse/HBASE-10029
> Project: HBase
> Issue Type: Bug
> Components: hadoop2
> Affects Versions: 0.96.0
> Reporter: Henry Hung
>
> HA namenode with QJM created from
> org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider
> should implement Closeable.
> [Mail
> Archive|https://drive.google.com/file/d/0B22pkxoqCdvWSGFIaEpfR3lnT2M/edit?usp=sharing]
> {code}
> 13/11/26 09:55:55 ERROR ipc.RPC: RPC.stopProxy called on non proxy.
> java.lang.IllegalArgumentException: object is not an instance of declaring
> class
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at
> org.apache.hadoop.hbase.fs.HFileSystem$1.invoke(HFileSystem.java:266)
> at $Proxy16.close(Unknown Source)
> at org.apache.hadoop.ipc.RPC.stopProxy(RPC.java:621)
> at
> org.apache.hadoop.hdfs.DFSClient.closeConnectionToNamenode(DFSClient.java:738)
> at org.apache.hadoop.hdfs.DFSClient.close(DFSClient.java:794)
> at
> org.apache.hadoop.hdfs.DistributedFileSystem.close(DistributedFileSystem.java:847)
> at
> org.apache.hadoop.fs.FileSystem$Cache.closeAll(FileSystem.java:2524)
> at
> org.apache.hadoop.fs.FileSystem$Cache$ClientFinalizer.run(FileSystem.java:2541)
> at
> org.apache.hadoop.util.ShutdownHookManager$1.run(ShutdownHookManager.java:54)
> 13/11/26 09:55:55 WARN util.ShutdownHookManager: ShutdownHook
> 'ClientFinalizer' failed, org.apache.hadoop.HadoopIllegalArgumentException:
> Cannot close proxy - is not Closeable or does not provide closeable
> invocation handler class $Proxy16
> org.apache.hadoop.HadoopIllegalArgumentException: Cannot close proxy - is not
> Closeable or does not provide closeable invocation handler class $Proxy16
> at org.apache.hadoop.ipc.RPC.stopProxy(RPC.java:639)
> at
> org.apache.hadoop.hdfs.DFSClient.closeConnectionToNamenode(DFSClient.java:738)
> at org.apache.hadoop.hdfs.DFSClient.close(DFSClient.java:794)
> at
> org.apache.hadoop.hdfs.DistributedFileSystem.close(DistributedFileSystem.java:847)
> at
> org.apache.hadoop.fs.FileSystem$Cache.closeAll(FileSystem.java:2524)
> at
> org.apache.hadoop.fs.FileSystem$Cache$ClientFinalizer.run(FileSystem.java:2541)
> at
> org.apache.hadoop.util.ShutdownHookManager$1.run(ShutdownHookManager.java:54)
> {code}
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