Alex Rodoni has posted comments on this change. ( http://gerrit.cloudera.org:8080/11355 )
Change subject: IMPALA-5937: [DOCS] PARQUET_READ_STATISTICS and PARQUET_DICTIONARY_FILTERING ...................................................................... Patch Set 4: (3 comments) http://gerrit.cloudera.org:8080/#/c/11355/4/docs/topics/impala_parquet_dictionary_filtering.xml File docs/topics/impala_parquet_dictionary_filtering.xml: http://gerrit.cloudera.org:8080/#/c/11355/4/docs/topics/impala_parquet_dictionary_filtering.xml@87 PS4, Line 87: The <codeph>NumDictFilteredRowGroups</codeph> field in the query profile output shows the > We should mention somewhere that row groups can be filtered out by parquet Done http://gerrit.cloudera.org:8080/#/c/11355/4/docs/topics/impala_parquet_read_statistics.xml File docs/topics/impala_parquet_read_statistics.xml: http://gerrit.cloudera.org:8080/#/c/11355/4/docs/topics/impala_parquet_read_statistics.xml@49 PS4, Line 49: Parquet stores min/max stats which can be used to skip reading blocks if they don't > The stats are (currently) used to skip row groups. "qualify a predicate" so Updated with a different wording http://gerrit.cloudera.org:8080/#/c/11355/4/docs/topics/impala_parquet_read_statistics.xml@61 PS4, Line 61: Of the numerical types: bool, integer, floating point > Impala also supports other data types, but there are restrictions around th Can I have the version info for the old and new statistics? -- To view, visit http://gerrit.cloudera.org:8080/11355 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-MessageType: comment Gerrit-Change-Id: I88fa8c4a64560711251076c50e1695f7f032f9c0 Gerrit-Change-Number: 11355 Gerrit-PatchSet: 4 Gerrit-Owner: Alex Rodoni <arod...@cloudera.com> Gerrit-Reviewer: Alex Rodoni <arod...@cloudera.com> Gerrit-Reviewer: Fredy Wijaya <fwij...@cloudera.com> Gerrit-Reviewer: Impala Public Jenkins <impala-public-jenk...@cloudera.com> Gerrit-Reviewer: Joe McDonnell <joemcdonn...@cloudera.com> Gerrit-Reviewer: Lars Volker <l...@cloudera.com> Gerrit-Comment-Date: Thu, 06 Sep 2018 22:53:41 +0000 Gerrit-HasComments: Yes
