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https://issues.apache.org/jira/browse/HADOOP-17144?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17188694#comment-17188694
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Hemanth Boyina edited comment on HADOOP-17144 at 9/1/20, 5:41 PM:
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{quote}Lz4Decompressor#setInputFromSavedData copies the part of the userBuf to
compressedDirectBuf (working buffer) considering the capacit
{quote}
directBufferSize will be the size of raw data , so the compressedDirectBuf and
UncompressedDirectBuf will have of same size
{code:java}
((ByteBuffer) compressedDirectBuf).put(userBuf, userBufOff,
compressedDirectBufLen); {code}
userBuf will be total compressed buffer and compressedDirectBufLen is total
number of compressed bytes , so the total userBuf will be kept in
compressedDirectBuf here and the same is used for decompression
With existing code for a raw data of length 204800 , the compressedDirectBuf
and UncompressedDirectBuf will have capacity of 204800 , the compressed bytes
size is 197622 , so the total compressed bytes is getting kept in
compressedDirectBuf
kindly correct me if i am missing something here
was (Author: hemanthboyina):
{quote}Lz4Decompressor#setInputFromSavedData copies the part of the userBuf to
compressedDirectBuf (working buffer) considering the capacit
{quote}
directBufferSize will be the size of raw data , so the compressedDirectBuf and
UncompressedDirectBuf will have of same size
{code:java}
((ByteBuffer) compressedDirectBuf).put(userBuf, userBufOff,
compressedDirectBufLen); {code}
> Update Hadoop's lz4 to v1.9.2
> -----------------------------
>
> Key: HADOOP-17144
> URL: https://issues.apache.org/jira/browse/HADOOP-17144
> Project: Hadoop Common
> Issue Type: Improvement
> Reporter: Hemanth Boyina
> Assignee: Hemanth Boyina
> Priority: Major
> Attachments: HADOOP-17144.001.patch, HADOOP-17144.002.patch,
> HADOOP-17144.003.patch, HADOOP-17144.004.patch
>
>
> Update hadoop's native lz4 to v1.9.2
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