[fix](hive) do not split compress data file and support lz4/snappy block codec #23245
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clang-tidy review says "All clean, LGTM! 👍" |
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clang-tidy review says "All clean, LGTM! 👍" |
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…ock codec (apache#23245) 1. do not split compress data file Some data file in hive is compressed with gzip, deflate, etc. These kinds of file can not be splitted. 2. Support lz4 block codec for hive scan node, use lz4 block codec instead of lz4 frame codec 4. Support snappy block codec For hadoop snappy 5. Optimize the `count(*)` query of csv file For query like `select count(*) from tbl`, only need to split the line, no need to split the column. Need to pick to branch-2.0 after this PR: apache#22304
…ock codec (#23245) (#23526) * [Refactor](load) Extract load public code (#22304) * [fix](hive) do not split compress data file and support lz4/snappy block codec (#23245) 1. do not split compress data file Some data file in hive is compressed with gzip, deflate, etc. These kinds of file can not be splitted. 2. Support lz4 block codec for hive scan node, use lz4 block codec instead of lz4 frame codec 4. Support snappy block codec For hadoop snappy 5. Optimize the `count(*)` query of csv file For query like `select count(*) from tbl`, only need to split the line, no need to split the column. Need to pick to branch-2.0 after this PR: #22304 --------- Co-authored-by: zzzzzzzs <[email protected]>
…ock codec (apache#23245) 1. do not split compress data file Some data file in hive is compressed with gzip, deflate, etc. These kinds of file can not be splitted. 2. Support lz4 block codec for hive scan node, use lz4 block codec instead of lz4 frame codec 4. Support snappy block codec For hadoop snappy 5. Optimize the `count(*)` query of csv file For query like `select count(*) from tbl`, only need to split the line, no need to split the column. Need to pick to branch-2.0 after this PR: apache#22304
Proposed changes
do not split compress data file
Some data file in hive is compressed with gzip, deflate, etc.
These kinds of file can not be splitted.
Support lz4 block codec
for hive scan node, use lz4 block codec instead of lz4 frame codec
Support snappy block codec
For hadoop snappy
Optimize the
count(*)query of csv fileFor query like
select count(*) from tbl, only need to split the line, no need to split the column.Need to pick to branch-2.0 after this PR: #22304
Further comments
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