copr: Implement ChunkedVecEnum

[Xuanwo]

What problem does this PR solve?

Implement ChunkedVecEnum

Check List

Tests

• Unit test

[Xuanwo]

Unittests will come in following commits

[skyzh]

Rest LGTM

[skyzh]

I suggest adding support for directly pushing usize values to ChunkedEnumVec, so as to reduce overhead. We may work on this later.

[breezewish]

?

[breezewish]

/merge

[ti-srebot]

Your auto merge job has been accepted, waiting for:

• 8821

[ti-srebot]

/run-all-tests

[ti-srebot]

@Xuanwo merge failed.

[Xuanwo]

/run-all-tests

[Xuanwo]

/run-all-tests

[Xuanwo]

/merge

[ti-srebot]

@Xuanwo Oops! auto merge is restricted to Committers of the SIG.You are not a committer or co-leader or leader.

[skyzh]

/merge

[andylokandy]

/merge

[andylokandy]

/merge

[ti-srebot]

/run-all-tests

[ti-srebot]

@Xuanwo merge failed.

[Xuanwo]

/run-all-tests

[zhongzc]

/merge

[ti-srebot]

/run-all-tests

[ti-srebot]

@Xuanwo merge failed.

[zhongzc]

/merge

[ti-srebot]

/run-all-tests

[ti-srebot]

@Xuanwo merge failed.

[zhongzc]

[2020-11-06T01:11:52.651Z] [2020/11/06 09:02:27.943 +08:00] [FATAL] [lib.rs:481] ["called `Result::unwrap()` on an `Err` value: channel is full"] [backtrace="stack backtrace:\n   0: tikv_util::set_panic_hook::{{closure}}\n   1: std::panicking::rust_panic_with_hook\n             at library/std/src/panicking.rs:581\n   2: std::panicking::begin_panic_handler::{{closure}}\n             at library/std/src/panicking.rs:484\n   3: std::sys_common::backtrace::__rust_end_short_backtrace\n             at library/std/src/sys_common/backtrace.rs:141\n   4: rust_begin_unwind\n             at library/std/src/panicking.rs:483\n   5: core::panicking::panic_fmt\n             at library/core/src/panicking.rs:85\n   6: core::option::expect_none_failed\n             at library/core/src/option.rs:1238\n   7: <raftstore::coprocessor::region_info_accessor::RegionEventListener as raftstore::coprocessor::RoleObserver>::on_role_change\n   8: raftstore::store::peer::Peer<EK,ER>::handle_raft_ready_append\n   9: <raftstore::store::fsm::store::RaftPoller<EK,ER,T,C> as batch_system::batch::PollHandler<raftstore::store::fsm::peer::PeerFsm<EK,ER>,raftstore::store::fsm::store::StoreFsm<EK>>>::handle_normal\n  10: batch_system::batch::Poller<N,C,Handler>::poll\n  11: std::sys_common::backtrace::__rust_begin_short_backtrace\n  12: core::ops::function::FnOnce::call_once{{vtable.shim}}\n  13: <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once\n             at /rustc/b1496c6e606dd908dd651ac2cce89815e10d7fc5/library/alloc/src/boxed.rs:1042\n      <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once\n             at /rustc/b1496c6e606dd908dd651ac2cce89815e10d7fc5/library/alloc/src/boxed.rs:1042\n      std::sys::unix::thread::Thread::new::thread_start\n             at library/std/src/sys/unix/thread.rs:89\n  14: start_thread\n  15: __clone\n"] [location=components/raftstore/src/coprocessor/region_info_accessor.rs:152] [thread_name=raftstore-1-0]

CI failed due to this panic. Will fixed by #8971.

[Xuanwo]

#8971 has been merged, let's rock!

[skyzh]

/merge

[ti-srebot]

/run-all-tests

[ti-srebot]

@Xuanwo merge failed.

[andylokandy]

/run-all-tests

[ti-srebot]

/run-all-tests

[zhongzc]

I wonder why chunked_vec_enum isn't included in data_type/mod.rs?

I tried to add mod chunked_vec_enum; to data_type/mod.rs, then some compile failed messages were produced by the compiler.

[skyzh]

I wonder why chunked_vec_enum isn't included in data_type/mod.rs?

I tried to add mod chunked_vec_enum; to data_type/mod.rs, then some compile failed messages were produced by the compiler.

This module is not used by any code in TiKV, so we may add it later. cc @Xuanwo would you please include this module together with ChunkedVecSet in #8988 ?

[Xuanwo]

OK, I will give it a try.