Yingchun Lai has posted comments on this change. ( http://gerrit.cloudera.org:8080/19622 )
Change subject: KUDU-3413 [multi-tenancy] update server key for multi-tenancy ...................................................................... Patch Set 6: (1 comment) http://gerrit.cloudera.org:8080/#/c/19622/5/src/kudu/fs/fs.proto File src/kudu/fs/fs.proto: http://gerrit.cloudera.org:8080/#/c/19622/5/src/kudu/fs/fs.proto@51 PS5, Line 51: clear the server_key related configuration items It's not a new feature, it's a compatibility guarantee. That is to say, if Kudu users only use the server key, it's able to upgrade Kudu server to a higher version, and they can downgrade it to a lower version freely, as long as they didn't use any new features in higher version (new feature may change disk format). We can take a look at RocksDB's column famliy design: > Backward compatibility > Although we needed to make drastic API changes to support Column Families, we > still support the old API. You don't > need to make any changes to upgrade > your application to RocksDB 3.0. All key-value pairs inserted through the old > API are inserted into the Column Family "default". The same is true for > downgrade after an upgrade. If you never use more than one Column Family, we > don't change any disk format, which means you can safely roll back to RocksDB > 2.8. This is very important for our customers inside Facebook. https://github.com/facebook/rocksdb/wiki/Column-Families -- To view, visit http://gerrit.cloudera.org:8080/19622 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-Project: kudu Gerrit-Branch: master Gerrit-MessageType: comment Gerrit-Change-Id: I9e450d73940eb1dbaac6f905a46d6ccd084f15cf Gerrit-Change-Number: 19622 Gerrit-PatchSet: 6 Gerrit-Owner: KeDeng <[email protected]> Gerrit-Reviewer: Alexey Serbin <[email protected]> Gerrit-Reviewer: Ashwani Raina <[email protected]> Gerrit-Reviewer: Attila Bukor <[email protected]> Gerrit-Reviewer: KeDeng <[email protected]> Gerrit-Reviewer: Kudu Jenkins (120) Gerrit-Reviewer: Tidy Bot (241) Gerrit-Reviewer: Wang Xixu <[email protected]> Gerrit-Reviewer: Yifan Zhang <[email protected]> Gerrit-Reviewer: Yingchun Lai <[email protected]> Gerrit-Reviewer: Yuqi Du <[email protected]> Gerrit-Comment-Date: Mon, 08 May 2023 03:06:45 +0000 Gerrit-HasComments: Yes
