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https://issues.apache.org/jira/browse/KUDU-3326?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17745375#comment-17745375
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ASF subversion and git services commented on KUDU-3326:
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Commit f9ed93de5e47adeb8624355bff352a8c885c68cc in kudu's branch
refs/heads/branch-1.17.x from Marton Greber
[ https://gitbox.apache.org/repos/asf?p=kudu.git;h=f9ed93de5 ]
KUDU-3326 Add soft-delete to Python client
This is a follow-up change to 7b6b6b636818d3e22a3939fde77689dce84e88b2.
Change-Id: Ia936c43dc52888eb4dc5827e944f18e1ff89940c
Reviewed-on: http://gerrit.cloudera.org:8080/19901
Tested-by: Kudu Jenkins
Reviewed-by: Yingchun Lai <[email protected]>
(cherry picked from commit fbace5e035e55379030d36710b2edef691f12983)
Reviewed-on: http://gerrit.cloudera.org:8080/20225
Reviewed-by: Marton Greber <[email protected]>
Reviewed-by: Yifan Zhang <[email protected]>
Tested-by: Yingchun Lai <[email protected]>
> Add Soft Delete Table Supports
> ------------------------------
>
> Key: KUDU-3326
> URL: https://issues.apache.org/jira/browse/KUDU-3326
> Project: Kudu
> Issue Type: New Feature
> Components: api, CLI, client, master, test
> Reporter: dengke
> Assignee: dengke
> Priority: Major
>
> h2. Brief description：
> Soft delete means that the kudu system will not delete the table
> immediately after receiving the command to delete the table. Instead, it will
> mark the table and set a validity period. After the validity period, will try
> again to determine whether the table really needs to be deleted.
> This feature can restore data conveniently and timely in the case of
> accidental deletion.
> h2. Relevant modification points：
> 1. After deleting a table, the original table name will be renamed as
> KUDU_TRASHED: < timestamp >: < original table name >, which becomes a trash
> table.
> 2. The contents of the trash table are exactly the same as those of the
> original table. Although it cannot be renamed, added or deleted directly,
> it can be read and written normally. The trash table will be retained for a
> period of time by default (such as 7 days, which can be modified through
> parameters). The compact priority of the trash table will be set to the
> lowest to save the system resources.
> 3. The master needs to add a thread to process expired trash tables and
> perform real deletion.
> 4. It is allowed to create a table with the same name as the original table,
> and the newly created table with the same name can be deleted normally.
> 5. It is allowed to recall deleted tables, but the following two situations
> cannot be recalled: the same original table name exists and the trash table
> has expired.
> 6. The KUDU_TRASHED is a reserved string for the system. Users are not
> allowed to create a table with table names starting with KUDU_TRASHED.
> 7. Kudu tool adaptation soft deletion.
> 8. Java API adaptation soft deletion.
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