[WIP] Proactive flush of delta merge layer phase 1 #7558

CalvinNeo · 2023-05-29T02:24:49Z

What problem does this PR solve?

Issue Number: close #7564

Problem Summary:

Take over #7088

On KVStore's side:

Filter all passive persistence request from proxy by sending fn_try_flush_data.
Call compactLogByRowKeyRange when there is a need for flush.
Call notifyCompactLog to inform proxy.

On Proxy's side:

Receive notifyCompactLog
Call schedule_compact_log_task, send a CheckCompact request to ApplyRouter.
Call check_pending_compact_log which will persist the ideal truncated_state from TiFlash.

What is changed and how it works?

Check List

Tests

Unit test
Integration test
Manual test (add detailed scripts or steps below)
No code

Side effects

Performance regression: Consumes more CPU
Performance regression: Consumes more Memory
Breaking backward compatibility

Documentation

Release note

None

Signed-off-by: hehechen <awd123456sss@gmail.com>

ti-chi-bot · 2023-05-29T02:24:51Z

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Signed-off-by: CalvinNeo <calvinneo1995@gmail.com>

…h_bg

Signed-off-by: CalvinNeo <calvinneo1995@gmail.com>

CalvinNeo · 2023-05-30T05:22:38Z

/run-all-tests

Signed-off-by: CalvinNeo <calvinneo1995@gmail.com>

CalvinNeo · 2023-05-30T08:31:24Z

/run-build-release comment=true

CalvinNeo · 2023-05-30T11:39:49Z

/run-build-release comment=true

CalvinNeo · 2023-05-30T11:40:09Z

/run-integration-test

purelind · 2023-05-30T13:58:00Z

/run-build-release

sre-bot · 2023-05-30T14:51:09Z

download tiflash binary(linux amd64) at http://fileserver.pingcap.net/download/builds/pingcap/test/tiflash/03a3da3e6e2b60ab192550ceba870b5b527f082f/centos7/tiflash-linux-amd64.tar.gz

CalvinNeo · 2023-05-31T05:37:23Z

/run-build-release

Signed-off-by: CalvinNeo <calvinneo1995@gmail.com>

CalvinNeo · 2023-05-31T06:28:08Z

/run-build-release comment=true

sre-bot · 2023-05-31T06:33:48Z

download tiflash binary(linux amd64) at http://fileserver.pingcap.net/download/builds/pingcap/test/tiflash/0aa3e77ef733cd8313b6fd6f0bb1f4dcb972fdb1/centos7/tiflash-linux-amd64.tar.gz

CalvinNeo · 2023-06-19T06:07:33Z

/run-build-release comment=true

sre-bot · 2023-06-19T06:57:16Z

download tiflash binary(linux amd64) at http://fileserver.pingcap.net/download/builds/pingcap/test/tiflash/49c7bc0ab72f3ba2f55c79740816bbc6d11d1845/centos7/tiflash-linux-amd64.tar.gz

CalvinNeo · 2023-06-19T08:54:51Z

Signed-off-by: CalvinNeo <calvinneo1995@gmail.com>

CalvinNeo · 2023-06-19T09:35:21Z

/run-build-release comment=true

sre-bot · 2023-06-19T10:22:33Z

download tiflash binary(linux amd64) at http://fileserver.pingcap.net/download/builds/pingcap/test/tiflash/7db53fe9feb94d9820e044b90d4de6576ee10a30/centos7/tiflash-linux-amd64.tar.gz

CalvinNeo · 2023-06-20T03:40:54Z

When foreground flusing region 8880, we need also flush reigon 554

#0  __lll_lock_wait (futex=futex@entry=0x7f4e948c6618, private=0) at lowlevellock.c:52
#1  0x00007f517ec8e131 in __GI___pthread_mutex_lock (mutex=0x7f4e948c6618) at ../nptl/pthread_mutex_lock.c:115
#2  0x00007f5183174026 in std::__1::recursive_mutex::lock() () from /tidb-deploy/tiflash-9000/bin/tiflash/libc++.so.1
#3  0x0000000007fa97cd in std::__1::lock_guard<std::__1::recursive_mutex>::lock_guard (__m=..., this=<optimized out>) at /usr/local/bin/../include/c++/v1/__mutex_base:90
#4  DB::RegionTaskLock::RegionTaskLock (mutex_=..., this=<optimized out>) at /home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tics/dbms/src/Storages/Transaction/RegionManager.h:89
#5  DB::RegionTaskCtrl::genRegionTaskLock (this=0x7f517deffb80, region_id=554) at /home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tics/dbms/src/Storages/Transaction/KVStore.cpp:123
#6  DB::RegionManager::genRegionTaskLock (this=0x7f517deffac0, region_id=554) at /home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tics/dbms/src/Storages/Transaction/KVStore.cpp:128
#7  DB::KVStore::notifyCompactLog (this=0x7f517deffac0, region_id=554, compact_index=<optimized out>, compact_term=10, is_background=false, lock_held=false)
    at /home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tics/dbms/src/Storages/Transaction/KVStore.cpp:1010
#8  DB::KVStore::compactLogByRowKeyRange (this=0x7f517deffac0, tmt=..., rowkey_range=..., keyspace_id=<optimized out>, table_id=<optimized out>, is_background=false)
    at /home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tics/dbms/src/Storages/Transaction/KVStore.cpp:969
#9  0x0000000007379222 in DB::DM::DeltaMergeStore::triggerCompactLog (this=0x7f514ae5b020, dm_context=..., segment=..., is_background=false)
    at /home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tics/dbms/src/Storages/DeltaMerge/DeltaMergeStore_InternalBg.cpp:950
#10 0x000000000735a6b0 in DB::DM::DeltaMergeStore::checkSegmentUpdate (this=0x7f514ae5b020, dm_context=..., segment=..., thread_type=<optimized out>)
    at /home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tics/dbms/src/Storages/DeltaMerge/DeltaMergeStore.cpp:1447
#11 0x0000000007356ba4 in DB::DM::DeltaMergeStore::write (this=0x7f514ae5b020, db_context=..., db_settings=..., block=...)
    at /home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tics/dbms/src/Storages/DeltaMerge/DeltaMergeStore.cpp:678
#12 0x0000000007fbe87c in DB::StorageDeltaMerge::write (this=0x7f517385d618, block=..., settings=...)
    at /home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tics/dbms/src/Storages/StorageDeltaMerge.cpp:536
#13 DB::writeRegionDataToStorage(DB::Context&, DB::RegionPtrWithBlock const&, std::__1::vector<std::__1::tuple<DB::RawTiDBPK, unsigned char, unsigned long, std::__1::shared_ptr<DB::StringObject<false> const> >, std::__1::allocator<std::__1::tuple<DB::RawTiDBPK, unsigned char, unsigned long, std::__1::shared_ptr<DB::StringObject<false> const> > > >&, std::__1::shared_ptr<DB::Logger> const&)::$_2::operator()(bool) const (this=0x7f4e00862d80, force_decode=<optimized out>) at /home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tics/dbms/src/Storages/Transaction/PartitionStreams.cpp:148
#14 0x0000000007fbacfa in DB::writeRegionDataToStorage (context=..., region=..., data_list_read=..., log=...)
    at /home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tics/dbms/src/Storages/Transaction/PartitionStreams.cpp:181
#15 0x0000000007fba9bc in DB::RegionTable::writeBlockByRegion (context=..., region=..., data_list_to_remove=..., log=..., lock_region=<optimized out>)
    at /home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tics/dbms/src/Storages/Transaction/PartitionStreams.cpp:359
#16 0x0000000007fe4fe2 in DB::Region::handleWriteRaftCmd (this=<optimized out>, cmds=..., index=<optimized out>, term=<optimized out>, tmt=...)
    at /home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tics/dbms/src/Storages/Transaction/Region.cpp:737
#17 0x0000000007f9f27d in DB::KVStore::handleWriteRaftCmd (this=0x7f517deffac0, cmds=..., region_id=8880, index=154510, term=8, tmt=...)
    at /home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tics/dbms/src/Storages/Transaction/KVStore.cpp:301
#18 0x0000000007fc2d05 in HandleWriteRaftCmd (server=<optimized out>, cmds=..., header=...)
    at /home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tics/dbms/src/Storages/Transaction/ProxyFFI.cpp:97
#19 0x00007f51804f0bd8 in <engine_store_ffi::observer::TiFlashObserver<T,ER> as raftstore::coprocessor::QueryObserver>::post_exec_query () from /tidb-deploy/tiflash-9000/bin/tiflash/libtiflash_proxy.so
#20 0x00007f51814085fd in raftstore::store::fsm::apply::ApplyDelegate<EK>::apply_raft_cmd () from /tidb-deploy/tiflash-9000/bin/tiflash/libtiflash_proxy.so
#21 0x00007f51814222a8 in raftstore::store::fsm::apply::ApplyDelegate<EK>::process_raft_cmd () from /tidb-deploy/tiflash-9000/bin/tiflash/libtiflash_proxy.so
#22 0x00007f5181427c04 in raftstore::store::fsm::apply::ApplyDelegate<EK>::handle_raft_committed_entries () from /tidb-deploy/tiflash-9000/bin/tiflash/libtiflash_proxy.so
#23 0x00007f51813f840c in raftstore::store::fsm::apply::ApplyFsm<EK>::handle_apply () from /tidb-deploy/tiflash-9000/bin/tiflash/libtiflash_proxy.so
#24 0x00007f51813fcf6b in raftstore::store::fsm::apply::ApplyFsm<EK>::handle_tasks () from /tidb-deploy/tiflash-9000/bin/tiflash/libtiflash_proxy.so
#25 0x00007f51805d4bee in <raftstore::store::fsm::apply::ApplyPoller<EK> as batch_system::batch::PollHandler<raftstore::store::fsm::apply::ApplyFsm<EK>,raftstore::store::fsm::apply::ControlFsm>>::handle_normal () from /tidb-deploy/tiflash-9000/bin/tiflash/libtiflash_proxy.so
#26 0x00007f5180541463 in batch_system::batch::Poller<N,C,Handler>::poll () from /tidb-deploy/tiflash-9000/bin/tiflash/libtiflash_proxy.so
#27 0x00007f5180638e78 in std::sys_common::backtrace::__rust_begin_short_backtrace () from /tidb-deploy/tiflash-9000/bin/tiflash/libtiflash_proxy.so
#28 0x00007f518068294e in core::ops::function::FnOnce::call_once{{vtable-shim}} () from /tidb-deploy/tiflash-9000/bin/tiflash/libtiflash_proxy.so

When forground flushing 554, we need also flushing 8880

#0  __lll_lock_wait (futex=futex@entry=0x7f515dfbf4d8, private=0) at lowlevellock.c:52
#1  0x00007f517ec8e131 in __GI___pthread_mutex_lock (mutex=0x7f515dfbf4d8) at ../nptl/pthread_mutex_lock.c:115
#2  0x00007f5183174026 in std::__1::recursive_mutex::lock() () from /tidb-deploy/tiflash-9000/bin/tiflash/libc++.so.1
#3  0x0000000007fa97cd in std::__1::lock_guard<std::__1::recursive_mutex>::lock_guard (__m=..., this=<optimized out>) at /usr/local/bin/../include/c++/v1/__mutex_base:90
#4  DB::RegionTaskLock::RegionTaskLock (mutex_=..., this=<optimized out>) at /home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tics/dbms/src/Storages/Transaction/RegionManager.h:89
#5  DB::RegionTaskCtrl::genRegionTaskLock (this=0x7f517deffb80, region_id=8880) at /home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tics/dbms/src/Storages/Transaction/KVStore.cpp:123
#6  DB::RegionManager::genRegionTaskLock (this=0x7f517deffac0, region_id=8880) at /home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tics/dbms/src/Storages/Transaction/KVStore.cpp:128
#7  DB::KVStore::notifyCompactLog (this=0x7f517deffac0, region_id=8880, compact_index=<optimized out>, compact_term=8, is_background=false, lock_held=false)
    at /home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tics/dbms/src/Storages/Transaction/KVStore.cpp:1010
#8  DB::KVStore::compactLogByRowKeyRange (this=0x7f517deffac0, tmt=..., rowkey_range=..., keyspace_id=<optimized out>, table_id=<optimized out>, is_background=false)
    at /home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tics/dbms/src/Storages/Transaction/KVStore.cpp:969
#9  0x0000000007379222 in DB::DM::DeltaMergeStore::triggerCompactLog (this=0x7f514ae5b020, dm_context=..., segment=..., is_background=false)
    at /home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tics/dbms/src/Storages/DeltaMerge/DeltaMergeStore_InternalBg.cpp:950
#10 0x000000000735a6b0 in DB::DM::DeltaMergeStore::checkSegmentUpdate (this=0x7f514ae5b020, dm_context=..., segment=..., thread_type=<optimized out>)
    at /home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tics/dbms/src/Storages/DeltaMerge/DeltaMergeStore.cpp:1447
#11 0x0000000007356ba4 in DB::DM::DeltaMergeStore::write (this=0x7f514ae5b020, db_context=..., db_settings=..., block=...)
    at /home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tics/dbms/src/Storages/DeltaMerge/DeltaMergeStore.cpp:678
#12 0x0000000007fbe87c in DB::StorageDeltaMerge::write (this=0x7f517385d618, block=..., settings=...)
    at /home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tics/dbms/src/Storages/StorageDeltaMerge.cpp:536
#13 DB::writeRegionDataToStorage(DB::Context&, DB::RegionPtrWithBlock const&, std::__1::vector<std::__1::tuple<DB::RawTiDBPK, unsigned char, unsigned long, std::__1::shared_ptr<DB::StringObject<false> const> >, std::__1::allocator<std::__1::tuple<DB::RawTiDBPK, unsigned char, unsigned long, std::__1::shared_ptr<DB::StringObject<false> const> > > >&, std::__1::shared_ptr<DB::Logger> const&)::$_2::operator()(bool) const (this=0x7f4e00a63d80, force_decode=<optimized out>) at /home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tics/dbms/src/Storages/Transaction/PartitionStreams.cpp:148
#14 0x0000000007fbacfa in DB::writeRegionDataToStorage (context=..., region=..., data_list_read=..., log=...)
    at /home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tics/dbms/src/Storages/Transaction/PartitionStreams.cpp:181
#15 0x0000000007fba9bc in DB::RegionTable::writeBlockByRegion (context=..., region=..., data_list_to_remove=..., log=..., lock_region=<optimized out>)
    at /home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tics/dbms/src/Storages/Transaction/PartitionStreams.cpp:359
#16 0x0000000007fe4fe2 in DB::Region::handleWriteRaftCmd (this=<optimized out>, cmds=..., index=<optimized out>, term=<optimized out>, tmt=...)
    at /home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tics/dbms/src/Storages/Transaction/Region.cpp:737
#17 0x0000000007f9f27d in DB::KVStore::handleWriteRaftCmd (this=0x7f517deffac0, cmds=..., region_id=554, index=125161, term=10, tmt=...)
    at /home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tics/dbms/src/Storages/Transaction/KVStore.cpp:301
#18 0x0000000007fc2d05 in HandleWriteRaftCmd (server=<optimized out>, cmds=..., header=...)
    at /home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tics/dbms/src/Storages/Transaction/ProxyFFI.cpp:97
#19 0x00007f51804f0bd8 in <engine_store_ffi::observer::TiFlashObserver<T,ER> as raftstore::coprocessor::QueryObserver>::post_exec_query () from /tidb-deploy/tiflash-9000/bin/tiflash/libtiflash_proxy.so
#20 0x00007f51814085fd in raftstore::store::fsm::apply::ApplyDelegate<EK>::apply_raft_cmd () from /tidb-deploy/tiflash-9000/bin/tiflash/libtiflash_proxy.so
#21 0x00007f51814222a8 in raftstore::store::fsm::apply::ApplyDelegate<EK>::process_raft_cmd () from /tidb-deploy/tiflash-9000/bin/tiflash/libtiflash_proxy.so
#22 0x00007f5181427c04 in raftstore::store::fsm::apply::ApplyDelegate<EK>::handle_raft_committed_entries () from /tidb-deploy/tiflash-9000/bin/tiflash/libtiflash_proxy.so
#23 0x00007f51813f840c in raftstore::store::fsm::apply::ApplyFsm<EK>::handle_apply () from /tidb-deploy/tiflash-9000/bin/tiflash/libtiflash_proxy.so
#24 0x00007f51813fcf6b in raftstore::store::fsm::apply::ApplyFsm<EK>::handle_tasks () from /tidb-deploy/tiflash-9000/bin/tiflash/libtiflash_proxy.so
#25 0x00007f51805d4bee in <raftstore::store::fsm::apply::ApplyPoller<EK> as batch_system::batch::PollHandler<raftstore::store::fsm::apply::ApplyFsm<EK>,raftstore::store::fsm::apply::ControlFsm>>::handle_normal () from /tidb-deploy/tiflash-9000/bin/tiflash/libtiflash_proxy.so
#26 0x00007f5180541463 in batch_system::batch::Poller<N,C,Handler>::poll () from /tidb-deploy/tiflash-9000/bin/tiflash/libtiflash_proxy.so

Signed-off-by: CalvinNeo <calvinneo1995@gmail.com>

CalvinNeo · 2023-06-20T15:32:23Z

/run-build-release comment=true

sre-bot · 2023-06-20T16:19:48Z

download tiflash binary(linux amd64) at http://fileserver.pingcap.net/download/builds/pingcap/test/tiflash/2dfaab1604c5bf52590ce76da3e027f70655d5cd/centos7/tiflash-linux-amd64.tar.gz

Signed-off-by: CalvinNeo <calvinneo1995@gmail.com>

ti-chi-bot · 2023-06-30T07:01:37Z

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CalvinNeo · 2023-07-03T12:23:51Z

/run-build-release comment=true

CalvinNeo · 2023-07-03T12:32:38Z

/run-build-release comment=true

Signed-off-by: CalvinNeo <calvinneo1995@gmail.com>

CalvinNeo · 2023-07-03T12:59:17Z

/run-build-release comment=true

sre-bot · 2023-07-03T13:45:52Z

download tiflash binary(linux amd64) at http://fileserver.pingcap.net/download/builds/pingcap/test/tiflash/6b7b2567ab10ae9d4e0c4f18e5e7feb3caad5835/centos7/tiflash-linux-amd64.tar.gz

Signed-off-by: CalvinNeo <calvinneo1995@gmail.com>

hehechen added 2 commits March 1, 2023 15:16

background delta flush

dbfec4a

Signed-off-by: hehechen <awd123456sss@gmail.com>

fix lock

2f873bf

Signed-off-by: hehechen <awd123456sss@gmail.com>

ti-chi-bot bot added do-not-merge/needs-linked-issue release-note-none Denotes a PR that doesn't merit a release note. needs-rebase Indicates a PR cannot be merged because it has merge conflicts with HEAD. size/L Denotes a PR that changes 100-499 lines, ignoring generated files. labels May 29, 2023

CalvinNeo force-pushed the calvin_delta_flush_bg branch from 72b2ae3 to 2f873bf Compare May 29, 2023 02:51

CalvinNeo added 3 commits May 29, 2023 10:56

add lock held

ffd10d1

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Merge remote-tracking branch 'upstream/master' into calvin_delta_flus…

c6391ab

…h_bg

add tests

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ti-chi-bot bot added size/XL Denotes a PR that changes 500-999 lines, ignoring generated files. and removed needs-rebase Indicates a PR cannot be merged because it has merge conflicts with HEAD. size/L Denotes a PR that changes 100-499 lines, ignoring generated files. labels May 29, 2023

add findByRangeChecked

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CalvinNeo force-pushed the calvin_delta_flush_bg branch from c38afe9 to 6c5986f Compare May 30, 2023 03:34

ti-chi-bot bot removed the do-not-merge/needs-linked-issue label May 30, 2023

f

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fix

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lock

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CalvinNeo force-pushed the calvin_delta_flush_bg branch from 0aa3e77 to 9c0e733 Compare May 31, 2023 05:56

to revert really remove lock

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CalvinNeo force-pushed the calvin_delta_flush_bg branch from 49c7bc0 to 7db53fe Compare June 19, 2023 09:35

CalvinNeo added 2 commits June 20, 2023 12:13

revert

ba3596c

Signed-off-by: CalvinNeo <calvinneo1995@gmail.com>

fix 2 fg lock

2dfaab1

Signed-off-by: CalvinNeo <calvinneo1995@gmail.com>

ti-chi-bot bot added size/XXL Denotes a PR that changes 1000+ lines, ignoring generated files. and removed size/XL Denotes a PR that changes 500-999 lines, ignoring generated files. labels Jun 20, 2023

CalvinNeo added 3 commits June 25, 2023 18:39

add some tests

6d6cc37

Signed-off-by: CalvinNeo <calvinneo1995@gmail.com>

support test of notify

9cb9ec1

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settings,tests,proxy updates

6aa3dc6

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CalvinNeo force-pushed the calvin_delta_flush_bg branch from c173db5 to 6aa3dc6 Compare June 30, 2023 07:01

fmt

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CalvinNeo force-pushed the calvin_delta_flush_bg branch from ec97a43 to 6b7b256 Compare July 3, 2023 12:57

a

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CalvinNeo changed the title ~~Proactive flush of delta merge layer~~ [WIP] Proactive flush of delta merge layer phase 1 Jul 6, 2023

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Proactive flush of delta merge layer #7756

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[WIP] Proactive flush of delta merge layer phase 1 #7558

[WIP] Proactive flush of delta merge layer phase 1 #7558

CalvinNeo commented May 29, 2023 •

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[WIP] Proactive flush of delta merge layer phase 1 #7558

[WIP] Proactive flush of delta merge layer phase 1 #7558

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CalvinNeo commented May 29, 2023 • edited Loading

What problem does this PR solve?

What is changed and how it works?

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CalvinNeo commented May 29, 2023 •

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