Prasanth Jayachandran created HIVE-20165:
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Summary: Enable ZLIB for streaming ingest
Key: HIVE-20165
URL: https://issues.apache.org/jira/browse/HIVE-20165
Project: Hive
Issue Type: Bug
Components: Streaming, Transactions
Affects Versions: 4.0.0, 3.2.0
Reporter: Prasanth Jayachandran
Assignee: Prasanth Jayachandran
Per [~gopalv]'s recommendation tried running streaming ingest with and without
zlib. Following are the numbers
*Compression: NONE*
Total rows committed: 93800000
Throughput: *1563333* rows/second
[prasanth@cn105-10 culvert]$ hdfs dfs -du -s -h
/apps/hive/warehouse/prasanth.db/culvert
*14.1 G* /apps/hive/warehouse/prasanth.db/culvert
*Compression: ZLIB*
Total rows committed: 92100000
Throughput: *1535000* rows/second
[prasanth@cn105-10 culvert]$ hdfs dfs -du -s -h
/apps/hive/warehouse/prasanth.db/culvert
*7.4 G* /apps/hive/warehouse/prasanth.db/culvert
ZLIB is getting us 2x compression and only 2% lesser throughput. We should
enable ZLIB by default for streaming ingest.
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