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https://issues.apache.org/jira/browse/HADOOP-17891?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
L. C. Hsieh updated HADOOP-17891:
---------------------------------
Description:
Lz4 is a provided dependency. So in the shaded Hadoop libraries, e.g.
hadoop-client-api, if we don't exclude lz4 dependency, the downstream will
still see the exception even they include lz4 dependency.
{code:java}
[info] Cause: java.lang.ClassNotFoundException:
org.apache.hadoop.shaded.net.jpountz.lz4.LZ4Factory
[info] at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
[info] at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
[info] at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:352)
[info] at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
[info] at
org.apache.hadoop.io.compress.lz4.Lz4Compressor.<init>(Lz4Compressor.java:66)
[info] at
org.apache.hadoop.io.compress.Lz4Codec.createCompressor(Lz4Codec.java:119)
[info] at
org.apache.hadoop.io.compress.CodecPool.getCompressor(CodecPool.java:152)
[info] at
org.apache.hadoop.io.compress.CodecPool.getCompressor(CodecPool.java:168)
{code}
was:
Lz4 is a provided dependency. So in the shaded Hadoop libraries, e.g.
hadoop-client-api, if we don't exclude lz4 dependency, the downstream will
still see the exception even they include lz4 dependency.
{code:java}
[info] Cause: java.lang.ClassNotFoundException:
org.apache.hadoop.shaded.net.jpountz.lz4.LZ4Factory
[info] at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
[info] at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
[info] at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:352)
[info] at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
[info] at
org.apache.hadoop.io.compress.lz4.Lz4Compressor.<init>(Lz4Compressor.java:66)
[info] at
org.apache.hadoop.io.compress.Lz4Codec.createCompressor(Lz4Codec.java:119)
[info] at
org.apache.hadoop.io.compress.CodecPool.getCompressor(CodecPool.java:152)
[info] at
org.apache.hadoop.io.compress.CodecPool.getCompressor(CodecPool.java:168)
{code}
[info] at
org.apache.hadoop.io.compress.CodecPool.getCompressor(CodecPool.java:168)
> Lz4 should be excluded from relocation in shaded Hadoop libraries
> -----------------------------------------------------------------
>
> Key: HADOOP-17891
> URL: https://issues.apache.org/jira/browse/HADOOP-17891
> Project: Hadoop Common
> Issue Type: Bug
> Reporter: L. C. Hsieh
> Priority: Major
>
> Lz4 is a provided dependency. So in the shaded Hadoop libraries, e.g.
> hadoop-client-api, if we don't exclude lz4 dependency, the downstream will
> still see the exception even they include lz4 dependency.
> {code:java}
> [info] Cause: java.lang.ClassNotFoundException:
> org.apache.hadoop.shaded.net.jpountz.lz4.LZ4Factory
> [info] at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
> [info] at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
> [info] at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:352)
> [info] at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
> [info] at
> org.apache.hadoop.io.compress.lz4.Lz4Compressor.<init>(Lz4Compressor.java:66)
> [info] at
> org.apache.hadoop.io.compress.Lz4Codec.createCompressor(Lz4Codec.java:119)
> [info] at
> org.apache.hadoop.io.compress.CodecPool.getCompressor(CodecPool.java:152)
> [info] at
> org.apache.hadoop.io.compress.CodecPool.getCompressor(CodecPool.java:168)
> {code}
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