Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
What do these changes do?
In
gen_subtask_graph
, Mars always create new out chunks even if the out chunk already exists. It costs a lot of time if there are plenty of chunks.Related issue number
Fixes #3341
I did a comparison, in which one creates new out chunks and the other does not. The test scripts are:
Cost time of
Subtask
generation are: 122.92s, 56.63s.Check code requirements