feat: support delete in pre-aggregator#2689

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XLC-2 wants to merge 20 commits into4paradigm:devfrom XLC-2:fix/data-consistency-pre-aggr2

+806-184

Commits on Aug 11, 2022

feat: Delete record interface of specified timestamp
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Commits on Aug 12, 2022

fix: protect deletion process with lock and add judgment on the use of new and old interfaces
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Commits on Aug 17, 2022

Commits on Aug 28, 2022

fix: fix bugs found in code review
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Commits on Aug 29, 2022

Commits on Sep 6, 2022

fix: snapshot remove deleted key when ts_col in index and add test cases

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Commits on Sep 10, 2022

fix: fix compile bugs about snapshot_test and improve the process of deleting record

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Commits on Sep 18, 2022

fix: 1. CollectDeletedKey and RemoveDeletedKey have the same logic to generate combined_key, 2. RemoveDeletedKey add combined_key to distinguish deletion granularity

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Commits on Sep 20, 2022

fix: fix cpplint error

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Commits on Sep 23, 2022

fix: 1. parse the ts column only instead of the entire record when needed; 2. remove the extra process of parsing records; 3. fix cpplint error

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Commits on Sep 29, 2022

fix: 1. use version decoder decode ts column; 2. update statistical data when do FreeTsEntry

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Commits on Oct 2, 2022

fix: when there is no record in the corresponding keyEntry after the last record is deleted, the keyEntry will also be deleted

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Commits on Oct 19, 2022

Merge branch 'fix/data-consistency-pre-aggr2' of github.com:XLC-2/OpenMLDB into fix/data-consistency-pre-aggr2

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feat: update aggr table when deleting a record

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Commits on Oct 23, 2022

fix: The maximum pre aggregation table or minimum pre aggregation table can be updated after deleting a record

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Commits on Oct 26, 2022

fix: modify the process of updating the extreme value aggregation table

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Commits on Oct 28, 2022

fix: updating aggr table when tablet deletes a record

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Commits on Nov 15, 2022

fix: use the same function to rebuild aggr buffer for MinAggr and MaxAggr

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