D3Hunter

Results 83 comments of D3Hunter

executor: introduce tag pointer in hash join v2

> which I think can effectively reduce the CPU time of hash join any compare result about this part? I personally prefer other ways of optimization to bit manipulation, unless...

executor: introduce tag pointer in hash join v2

/hold hold for a while to get more test result.

executor: introduce tag pointer in hash join v2

> So I think if we can reduce the probe collision, it is for sure that we can reduce the cpu time. Thanks for the detailed explanation. it makes sense,...

executor: introduce tag pointer in hash join v2

/unhold

*: set default shard_row_id_bits and pre_split_regions for all tables

/hold new feature need confirm from PM

lint: add a linter to avoid using `==nil` to assert empty slice or map

i think it's a little over-reacting to the bug in description. misusing between `len(xx) == 0` and `xx == nil` are human errors, that cannot be avoided by replacing `xx...

lightning: v8.2 lightning failed to import data to v8.1 version tidb cluster

the cause is PD and pd-client 8.2 introduced a new API which doesn't exists in 8.1, and lightning reports `unknown method BatchScanRegions for service pdpb.PD` during split-scatter, see https://github.com/pingcap/tidb/pull/54153 lightning...

executor,infoschema: Add pad_attribute to collation info | tidb-test=pr/2354

@hawkingrei @lcwangchao

disttask: make task executor `onError` print error's stack.

/hold

disttask: make task executor `onError` print error's stack.

/unhold