Adar Dembo has posted comments on this change. ( http://gerrit.cloudera.org:8080/15138 )
Change subject: [docs] note about space reclamation for deleted rows ...................................................................... Patch Set 1: (2 comments) http://gerrit.cloudera.org:8080/#/c/15138/1/docs/schema_design.adoc File docs/schema_design.adoc: http://gerrit.cloudera.org:8080/#/c/15138/1/docs/schema_design.adoc@573 PS1, Line 573: I think I'd rewrite it like this: Deleted row disk space is not reclaimed:: The disk space occupied by a deleted row is only reclaimable via compaction, and only when the deletion's age exceeds the "tablet history maximum age" (controlled by the `--tablet_history_max_age_sec` flag). Furthermore, Kudu currently only schedules compactions in order to improve read/write performance; a tablet will never be compacted purely to reclaim disk space. As such, range partitioning should be used when it is expected that large swaths of rows will be discarded. See KUDU-1625 for details. http://gerrit.cloudera.org:8080/#/c/15138/1/docs/schema_design.adoc@574 PS1, Line 574: don't doesn't -- To view, visit http://gerrit.cloudera.org:8080/15138 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-Project: kudu Gerrit-Branch: master Gerrit-MessageType: comment Gerrit-Change-Id: Ib49e86ed80af0325e3ceaceb9964749534755be4 Gerrit-Change-Number: 15138 Gerrit-PatchSet: 1 Gerrit-Owner: Alexey Serbin <[email protected]> Gerrit-Reviewer: Adar Dembo <[email protected]> Gerrit-Reviewer: Andrew Wong <[email protected]> Gerrit-Reviewer: Grant Henke <[email protected]> Gerrit-Reviewer: Kudu Jenkins (120) Gerrit-Reviewer: Volodymyr Verovkin <[email protected]> Gerrit-Comment-Date: Thu, 30 Jan 2020 20:50:16 +0000 Gerrit-HasComments: Yes
