[PARQUET-386] Printing out the statistics of metadata in parquet-tools

• Type: Improvement
• Status: Resolved
• Priority: Trivial
• Resolution: Fixed
• Fix Version/s: 1.10.0
• Component/s: parquet-mr
• Labels: pull-request-available
• Assignee: Gabor Szadovszky
• Reporter: Onur Soyer
• Created: 02/Oct/15 00:33
• Updated: 07/Jan/19 11:56
• Resolved: 10/Jan/18 14:00

Description

While playing with "parquet-tools", I found that the statistics data of columns is not being printed out when the following is executed;

$ java -jar parquet-tools-1.6.0rc3-SNAPSHOT.jar schema --detailed perf.1000.parquet

And the output for a row group like this;

=====================================================================================================================

row group 1: RC:747388 TS:134218473 OFFSET:4
--------------------------------------------------------------------------------
cust_key: INT64 UNCOMPRESSED DO:0 FPO:4 SZ:5979444/5979444/1.00 VC:747388 ENC:PLAIN,RLE,BIT_PACKED
name: BINARY UNCOMPRESSED DO:0 FPO:5979448 SZ:16443766/16443766/1.00 VC:747388 ENC:PLAIN,RLE,BIT_PACKED
address: BINARY UNCOMPRESSED DO:0 FPO:22423214 SZ:21716568/21716568/1.00 VC:747388 ENC:PLAIN,RLE,BIT_PACKED
nation_key: INT32 UNCOMPRESSED DO:0 FPO:44139782 SZ:2989697/2989697/1.00 VC:747388 ENC:PLAIN,RLE,BIT_PACKED
phone: BINARY UNCOMPRESSED DO:0 FPO:47129479 SZ:14201364/14201364/1.00 VC:747388 ENC:PLAIN,RLE,BIT_PACKED
acctbal: DOUBLE UNCOMPRESSED DO:0 FPO:61330843 SZ:5979444/5979444/1.00 VC:747388 ENC:PLAIN,RLE,BIT_PACKED
mktsegment: BINARY UNCOMPRESSED DO:0 FPO:67310287 SZ:9714675/9714675/1.00 VC:747388 ENC:PLAIN,RLE,BIT_PACKED
comment_col: BINARY UNCOMPRESSED DO:0 FPO:77024962 SZ:57193515/57193515/1.00 VC:747388 ENC:PLAIN,RLE,BIT_PACKED

=====================================================================================================================

However, it would be great to print out the data of statistics of metadata.

Issue Links

• duplicates: PARQUET-327 Show statistics in the dump output
• links to: GitHub Pull Request #279
• links to: PR