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https://issues.apache.org/jira/browse/HBASE-6843?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13475925#comment-13475925
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Lars Hofhansl commented on HBASE-6843:
--------------------------------------
Trying to understand the issue here.
@Zhou, are you saying the coprocessors cannot be used at all if native lzo is
used for compression? Is this the typical lzo compression library folks would
use? That would indeed be pretty bad.
> 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: 0.94.3, 0.96.0
>
> 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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