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https://issues.apache.org/jira/browse/HBASE-6843?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13481713#comment-13481713
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Andrew Purtell commented on HBASE-6843:
---------------------------------------
bq. Is this the typical lzo compression library folks would use? That would
indeed be pretty bad.
It is, and it is, but {{com.hadoop}} classes are from the Hadoop GPL codec
project.
The trivial thing to do here is add them to the whitelist but there are two
larger issues IMHO. The precedent is bad, whitelisting non ASF code. How often
will we do this? And anyway the whitelist should not be hardcoded anyway. At
least, it should be extensible.
> 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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