Get rid of empty blocks #15
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Filter methods now return Optional<> instead. Operators never produce an empty block.
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Good stuff. |
billonahill
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Jan 12, 2016
…leak Cache the UGI object per user in BackgroundHiveSplitLoader
miniway
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Oct 30, 2018
yyang52
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Aug 20, 2021
Planner API refactor (init part)
elbinpallimalilibm
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Oct 9, 2024
Leziak
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Apr 9, 2025
# This is the 1st commit message: [native] Add a test group for async data cache e2e tests. # This is the commit message prestodb#2: [native] Advance velox. # This is the commit message prestodb#3: Fix error when describing a nonexistent table # This is the commit message prestodb#4: [native] test modification. # This is the commit message prestodb#5: Changes to enable ssl/tls in hms Co-authored-by: Arin Mathew <[email protected]> Changes to move ssl related properties to seperate class # This is the commit message prestodb#6: [native] Add tests for UUID type # This is the commit message prestodb#7: Reintroduced json_extract to generate canonicalized output (prestodb#24879) ## Description The original pull request [prestodb#24614](prestodb#24614) incorrectly compares canonicalizedJsonExtract and legacyJsonCast in the equals function of an object. This issue can be seen in the code [here](https://github.com/prestodb/presto/pull/24614/files#diff-e921c5d186f9d5daa836bc7330f52caf8c1b84d19cf42288d5a8a7c9a6d2a5d5R156). As a result, whenever a SQL function requires caching, the cache is never hit, leading to the creation of new SQL function objects repeatedly. This behavior eventually causes an OOM error in the JVM metaspace. and eventually this error led to UER SEV. After the problematic comparison was updated and tested through shadow cluster by @rschlussel , we are confident that the issue has been resolved in this PR. Therefore, we plan to bring back the json canonicalized extract ## Motivation and Context Reintroduced json_extract to generate canonicalized output ## Impact <!---Describe any public API or user-facing feature change or any performance impact--> low impact ## Test Plan <!---Please fill in how you tested your change--> N/A ## Contributor checklist - [x] Please make sure your submission complies with our [contributing guide](https://github.com/prestodb/presto/blob/master/CONTRIBUTING.md), in particular [code style](https://github.com/prestodb/presto/blob/master/CONTRIBUTING.md#code-style) and [commit standards](https://github.com/prestodb/presto/blob/master/CONTRIBUTING.md#commit-standards). - [x] PR description addresses the issue accurately and concisely. If the change is non-trivial, a GitHub Issue is referenced. - [x] Documented new properties (with its default value), SQL syntax, functions, or other functionality. - [x] If release notes are required, they follow the [release notes guidelines](https://github.com/prestodb/presto/wiki/Release-Notes-Guidelines). - [x] Adequate tests were added if applicable. - [x] CI passed. ## Release Notes Please follow [release notes guidelines](https://github.com/prestodb/presto/wiki/Release-Notes-Guidelines) and fill in the release notes below. ``` == NO RELEASE NOTE == ``` # This is the commit message prestodb#8: Reuse JoinType in IndexJoinNode Reuse JoinType instead of creating IndexJoinNode's own. JoinType is already part of Prestissimo protocol. Adding IndexJoinNode with another JoinType would cause naming conflict. # This is the commit message prestodb#9: Add jaro-winkler implementation, documentation and tests # This is the commit message prestodb#10: Add documentation for Iceberg support in PrestoCPP # This is the commit message prestodb#11: Add memory pool debug regex # This is the commit message prestodb#12: doc on hive csv limitations # This is the commit message prestodb#13: Add support for S3 WebIdentity authentication # This is the commit message prestodb#14: use com.facebook.airlift:security in presto-hive-metastore # This is the commit message prestodb#15: [native] Advance Velox # This is the commit message prestodb#16: [native] Add protocol for index lookup join plan # This is the commit message prestodb#17: [native] Add sidecar and sidecar plugin documentation
wraymo
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Jun 20, 2025
Co-authored-by: kirkrodrigues <[email protected]>
tdcmeehan
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Feb 8, 2026
New issues: - #13: Cost model assumes local NVMe, invalid for S3/HDFS (0.3s becomes 5-30s) - prestodb#14: Parquet BF section is 115-line dead end, should be condensed - prestodb#15: Duplicate section numbering (two "Section 6" headers) - prestodb#16: Superlinear join efficiency claims lack citations - prestodb#17: CTE materialization cost missing from quantitative cost model - prestodb#18: Reduced hash table may still exceed VRAM — fallback composition unclear Updated existing issues: #1,#3 remaining gaps noted, #2 now worse (more occurrences), #7 partially addressed. 12 open issues total. https://claude.ai/code/session_01SAXk4AS8yQyQkhRVi6RQie
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Filter methods now return Optional<> instead. Operators never produce an empty block.