[SYSTEMDS-3492] Lineage-based reuse of all RDDs #1777
Closed
Conversation
This file contains hidden or 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
This patch enables reuse of RDDs of redundant Spark operations. We also persist a subset of operations in the executors, where the rest are just cached locally. Reuse of even unpersisted RDDs allows Spark to apply optimizations and skip stages. In addition, this patch removes the compile-time flag to indicate reuse and instead reuse all RDDs. Local RDD caching is now disabled due to bugs. LinCache Spark (Col/Loc/Dist): 16/2/2. => indicates the number of reused collects/prefetches (=16), local RDDs (=2) and persisted RDDs(=2).
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
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Outdated suggestions cannot be applied.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.
This patch enables reuse of RDDs of redundant Spark operations. We also persist a subset of operations in the executors, where the rest are just cached locally. Reuse of even unpersisted RDDs allows Spark to apply optimizations and skip stages. In addition, this patch removes the compile-time flag to indicate reuse and instead reuse all RDDs. Local RDD caching is now disabled due to bugs.
LinCache Spark (Col/Loc/Dist): 16/2/2. =>
indicates the number of reused collects/prefetches (=16), local RDDs (=2) and persisted RDDs(=2).