Zoltan Borok-Nagy has posted comments on this change. ( http://gerrit.cloudera.org:8080/13900 )
Change subject: IMPALA-7991 IMPALA-8575: [DOCS] Document the query options for Parquet page indexes ...................................................................... Patch Set 3: (5 comments) http://gerrit.cloudera.org:8080/#/c/13900/3/docs/topics/impala_parquet_write_page_index.xml File docs/topics/impala_parquet_write_page_index.xml: http://gerrit.cloudera.org:8080/#/c/13900/3/docs/topics/impala_parquet_write_page_index.xml@48 PS3, Line 48: <p> : This option enables the same optimization as the <codeph>PARQUET_READ_STATISTICS</codeph> : for writing at the finer grained page level. : </p> This option is only about writing, so this paragraph doesn't belong here. http://gerrit.cloudera.org:8080/#/c/13900/3/docs/topics/impala_parquet_write_page_index.xml@54 PS3, Line 54: Impala supports filtering based on Parquet statistics: Impala writes page-level statistics into the Parquet page index: http://gerrit.cloudera.org:8080/#/c/13900/3/docs/topics/impala_parquet_write_page_index.xml@62 PS3, Line 62: <li> : For simple predicates of the forms: <codeph><slot> <op> <constant></codeph> or : <codeph><constant> <op> <slot></codeph>, where <codeph><op></codeph> is LT, : LE, GE, GT, and EQ : </li> This isn't really belong to the write path. http://gerrit.cloudera.org:8080/#/c/13900/3/docs/topics/impala_parquet_write_page_index.xml@73 PS3, Line 73: Read statistics from Parquet pages and use : them in query processing. Write the Parquet page index when creating Parquet files. http://gerrit.cloudera.org:8080/#/c/13900/3/docs/topics/impala_parquet_write_page_index.xml@78 PS3, Line 78: Do not use Parquet write page statistics. Do not write the Parquet page index when creating Parquet files. -- To view, visit http://gerrit.cloudera.org:8080/13900 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-MessageType: comment Gerrit-Change-Id: I46c1941269feff18306863f784aa36f5037da1db Gerrit-Change-Number: 13900 Gerrit-PatchSet: 3 Gerrit-Owner: Alex Rodoni <[email protected]> Gerrit-Reviewer: Alex Rodoni <[email protected]> Gerrit-Reviewer: Impala Public Jenkins <[email protected]> Gerrit-Reviewer: Lars Volker <[email protected]> Gerrit-Reviewer: Zoltan Borok-Nagy <[email protected]> Gerrit-Comment-Date: Thu, 25 Jul 2019 08:21:48 +0000 Gerrit-HasComments: Yes
