Add option to only schedule Hive splits locally #1770
Merged
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
dain
force-pushed
the
hive-schedule-local-only
branch
3 times, most recently
from
58ed4c8
to
1eb9d17
Compare
|
Looks good. |
|
What do you mean by locally? Only one node ca ndo the query ? |
|
Presto will only schedule a split on a node that has the block being scanned. Technically, the start of the split that is local; if the split spans blocks, you will still get remote reads. This option is for people that run Presto collocated with every datanode |
|
Terific! It's my case. I will test this option and check performance. @dain thanks. |
Add a configuration and session property to force local scheduling of Hive splits
dain
force-pushed
the
hive-schedule-local-only
branch
from
1eb9d17
to
9d87b87
Compare
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
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Outdated suggestions cannot be applied.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.
Add a configuration and session property to only schedule Hive splits locally