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https://issues.apache.org/jira/browse/HBASE-6843?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13459354#comment-13459354
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Andrew Purtell commented on HBASE-6843:
---------------------------------------
"com.hadoop" isn't HBase or even ASF licensed code, so adding it to the built
in prefix exemption list seems wrong. What we should do here is allow users to
add class prefixes to the exception list. Would you like to try that Zhou?
> loading lzo error when using coprocessor
> ----------------------------------------
>
> Key: HBASE-6843
> URL: https://issues.apache.org/jira/browse/HBASE-6843
> Project: HBase
> Issue Type: Bug
> Components: coprocessors
> Affects Versions: 0.94.1
> Reporter: Zhou wenjian
> Assignee: Zhou wenjian
> Priority: Critical
> Fix For: 0.96.0, 0.94.3
>
> Attachments: HBASE-6843-trunk.patch
>
>
> After applying HBASE-6308,we found error followed
> 2012-09-06 00:44:38,341 DEBUG
> org.apache.hadoop.hbase.coprocessor.CoprocessorClassLoader: Finding class:
> com.hadoop.compression.lzo.LzoCodec
> 2012-09-06 00:44:38,351 ERROR com.hadoop.compression.lzo.GPLNativeCodeLoader:
> Could not load native gpl library
> java.lang.UnsatisfiedLinkError: Native Library
> /home/zhuzhuang/hbase/0.94.0-ali-1.0/lib/native/Linux-amd64-64/libgplcompression.so
> already loaded in another classloade
> r
> at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1772)
> at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1732)
> at java.lang.Runtime.loadLibrary0(Runtime.java:823)
> at java.lang.System.loadLibrary(System.java:1028)
> at
> com.hadoop.compression.lzo.GPLNativeCodeLoader.<clinit>(GPLNativeCodeLoader.java:32)
> at com.hadoop.compression.lzo.LzoCodec.<clinit>(LzoCodec.java:67)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
> at
> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
> at
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
> at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
> at
> org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:113)
> at
> org.apache.hadoop.hbase.io.hfile.Compression$Algorithm$1.getCodec(Compression.java:107)
> at
> org.apache.hadoop.hbase.io.hfile.Compression$Algorithm.getCompressor(Compression.java:243)
> at
> org.apache.hadoop.hbase.util.CompressionTest.testCompression(CompressionTest.java:85)
> at
> org.apache.hadoop.hbase.regionserver.HRegion.checkCompressionCodecs(HRegion.java:3793)
> at org.apache.hadoop.hbase.regionserver.HRegion.openHRegion(HRegion.java:3782)
> at org.apache.hadoop.hbase.regionserver.HRegion.openHRegion(HRegion.java:3732)
> at
> org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler.openRegion(OpenRegionHandler.java:332)
> at
> org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler.process(OpenRegionHandler.java:108)
> at org.apache.hadoop.hbase.executor.EventHandler.run(EventHandler.java:169)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> at java.lang.Thread.run(Thread.java:662)
> 2012-09-06 00:44:38,355 DEBUG
> org.apache.hadoop.hbase.coprocessor.CoprocessorClassLoader: Skipping exempt
> class java.io.PrintWriter - delegating directly to parent
> 2012-09-06 00:44:38,355 ERROR com.hadoop.compression.lzo.LzoCodec: Cannot
> load native-lzo without native-hadoop
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