Denys Kuzmenko

DRAFT: Cleaner min open GLB txn limitation removal

1

### What changes were proposed in this pull request? ### Why are the changes needed? ### Does this PR introduce _any_ user-facing change? ### How was this patch tested?

HIVE-28084: Iceberg: COW fix for Merge operation

1

### What changes were proposed in this pull request? Fix the subquery union sql ### Why are the changes needed? BugFix ### Does this PR introduce _any_ user-facing change? No...

Iceberg: FanoutPositionOnlyDeleteWriter support

1

### What changes were proposed in this pull request? ### Why are the changes needed? ### Does this PR introduce _any_ user-facing change? ### Is the change a dependency upgrade?...

[WIP] Iceberg: Do not use HMS stats when statsSource is Iceberg

1

### What changes were proposed in this pull request? ### Why are the changes needed? ### Does this PR introduce _any_ user-facing change? ### Is the change a dependency upgrade?...

HIVE-28366: Iceberg: Concurrent Insert and IOW produce incorrect result

1

### What changes were proposed in this pull request? Introduces the locking to serialize some operation execution ### Why are the changes needed? Fixes the data correctness in case of...

HIVE-28581: Support Partition Prunning stats optimization for Iceberg tables

3

### What changes were proposed in this pull request? Add support for Iceberg partition prune stats optimization ### Why are the changes needed? Performance ### Does this PR introduce _any_...