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https://issues.apache.org/jira/browse/HADOOP-19255?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18096135#comment-18096135
 ] 

ASF GitHub Bot commented on HADOOP-19255:
-----------------------------------------

hadoop-yetus commented on PR #8601:
URL: https://github.com/apache/hadoop/pull/8601#issuecomment-4968146394

   :confetti_ball: **+1 overall**
   
   
   
   
   
   
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[/results-checkstyle-hadoop-common-project_hadoop-common.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8601/1/artifact/out/results-checkstyle-hadoop-common-project_hadoop-common.txt)
 |  hadoop-common-project/hadoop-common: The patch generated 2 new + 120 
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https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8601/1/artifact/out/Dockerfile
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   | GITHUB PR | https://github.com/apache/hadoop/pull/8601 |
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https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8601/1/testReport/ |
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   | modules | C: hadoop-common-project/hadoop-common U: 
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https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8601/1/console |
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   | Powered by | Apache Yetus 0.14.1 https://yetus.apache.org |
   
   
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> LZO files cannot be decompressed
> --------------------------------
>
>                 Key: HADOOP-19255
>                 URL: https://issues.apache.org/jira/browse/HADOOP-19255
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: common
>    Affects Versions: 3.4.0
>            Reporter: Shailesh Gupta
>            Priority: Critical
>              Labels: pull-request-available
>
> The following command fails with the below exception:
> hadoop fs -text [file:///home/hadoop/part-ak.lzo]
> {code:java}
> 2024-08-21 05:05:07,418 INFO lzo.GPLNativeCodeLoader: Loaded native gpl 
> library
> 2024-08-21 05:05:08,706 INFO lzo.LzoCodec: Successfully loaded & initialized 
> native-lzo library [hadoop-lzo rev 049362b7cf53ff5f739d6b1532457f2c6cd495e8]
> 2024-08-21 05:07:01,542 INFO compress.CodecPool: Got brand-new decompressor 
> [.lzo]
> 2024-08-21 05:07:14,558 WARN lzo.LzopInputStream: Incorrect LZO file format: 
> file did not end with four trailing zeroes.
> java.io.IOException: Corrupted uncompressed block
>     at 
> com.hadoop.compression.lzo.LzopInputStream.verifyChecksums(LzopInputStream.java:219)
>     at 
> com.hadoop.compression.lzo.LzopInputStream.close(LzopInputStream.java:342)
>     at org.apache.hadoop.fs.shell.Display$Cat.printToStdout(Display.java:102)
>     at org.apache.hadoop.fs.shell.Display$Cat.processPath(Display.java:95)
>     at 
> org.apache.hadoop.fs.shell.Command.processPathInternal(Command.java:383)
>     at org.apache.hadoop.fs.shell.Command.processPaths(Command.java:346)
>     at 
> org.apache.hadoop.fs.shell.Command.processPathArgument(Command.java:319)
>     at org.apache.hadoop.fs.shell.Command.processArgument(Command.java:301)
>     at org.apache.hadoop.fs.shell.Command.processArguments(Command.java:285)
>     at 
> org.apache.hadoop.fs.shell.FsCommand.processRawArguments(FsCommand.java:121)
>     at org.apache.hadoop.fs.shell.Command.run(Command.java:192)
>     at org.apache.hadoop.fs.FsShell.run(FsShell.java:327)
>     at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:82)
>     at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:97)
>     at org.apache.hadoop.fs.FsShell.main(FsShell.java:390)
> Exception in thread "main" java.lang.InternalError: lzo1x_decompress_safe 
> returned: -5
>     at 
> com.hadoop.compression.lzo.LzoDecompressor.decompressBytesDirect(Native 
> Method)
>     at 
> com.hadoop.compression.lzo.LzoDecompressor.decompress(LzoDecompressor.java:315)
>     at 
> com.hadoop.compression.lzo.LzopDecompressor.decompress(LzopDecompressor.java:122)
>     at 
> com.hadoop.compression.lzo.LzopInputStream.decompress(LzopInputStream.java:252)
>     at 
> org.apache.hadoop.io.compress.DecompressorStream.read(DecompressorStream.java:110)
>     at java.base/java.io.InputStream.read(InputStream.java:218)
>     at org.apache.hadoop.io.IOUtils.copyBytes(IOUtils.java:95)
>     at org.apache.hadoop.io.IOUtils.copyBytes(IOUtils.java:68)
>     at org.apache.hadoop.io.IOUtils.copyBytes(IOUtils.java:132)
>     at org.apache.hadoop.fs.shell.Display$Cat.printToStdout(Display.java:100)
>     at org.apache.hadoop.fs.shell.Display$Cat.processPath(Display.java:95)
>     at 
> org.apache.hadoop.fs.shell.Command.processPathInternal(Command.java:383)
>     at org.apache.hadoop.fs.shell.Command.processPaths(Command.java:346)
>     at 
> org.apache.hadoop.fs.shell.Command.processPathArgument(Command.java:319)
>     at org.apache.hadoop.fs.shell.Command.processArgument(Command.java:301)
>     at org.apache.hadoop.fs.shell.Command.processArguments(Command.java:285)
>     at 
> org.apache.hadoop.fs.shell.FsCommand.processRawArguments(FsCommand.java:121)
>     at org.apache.hadoop.fs.shell.Command.run(Command.java:192)
>     at org.apache.hadoop.fs.FsShell.run(FsShell.java:327)
>     at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:82)
>     at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:97)
>     at org.apache.hadoop.fs.FsShell.main(FsShell.java:390) {code}
> From my analysis, i was pinpoint to the 
> [change|https://github.com/apache/hadoop/pull/5912/files#diff-268b9968a4db21ac6eeb7bcaef10e4db744d00ba53989fc7251bb3e8d9eac7dfR904]
>  which changed _io.compression.codec.lzo.buffersize_ from 64KB to 256KB.
> Earlier, the default value was being picked from 
> [here|https://github.com/twitter/hadoop-lzo/blob/master/src/main/java/com/hadoop/compression/lzo/LzoCodec.java#L51].
> Let me know if my analysis looks good. What should be the proper approach to 
> fixing it?
>  



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