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pooja_bhumandla
New Contributor II
since ‎06-17-2025
‎07-31-2025

User Stats

  • 10 Posts
  • 0 Solutions
  • 0 Kudos given
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User Activity

Will Unsetting delta.targetFileSize During Data Load Cause Any Issues?

07-30-2025
Hi,If I unset the Spark config delta.targetFileSize (e.g., using alter) while a data load is in progress (batch or streaming), will it cause any issues?Will the load fail or behave inconsistently due to the config being changed mid-process?Thanks!

Performance Behavior of MERGE with Partitioned Table: Impact of ZORDER and Deletion Vectors

07-25-2025
Hi Databricks Community,I’m analyzing the performance of Delta Lake MERGE operations on a partitioned table, and I observed unexpected behavior across 3 test cases.I wanted to share my findings to better understand:Why ZORDER or Deletion Vectors help...

Small Files Persist After OPTIMIZE with Target File Size Set to 100MB – Seeking Possible Reasons

07-03-2025
I'm currently working on optimizing a Delta table in Databricks. As part of this, I’ve increased the target file size from the (~33MB) to 100MB using the OPTIMIZE command. However, after running the OPTIMIZE operation, I still observe a large number ...

Why is Merge with Deletion Vectors Slower Than Full File Rewrite on the Same Table?

06-30-2025
I've run two MERGE INTO operations on the same Delta table—one with Deletion Vectors enabled (Case 1), and one without (Case 2).In Case 1 (with Deletion Vectors):  executionTimeMs: 106,708  materializeSourceTimeMs: 24,344 numTargetRowsUpdated: 22  nu...

Auto tuning of file size

06-18-2025
Why maxFileSize and minFileSize are different from targetFileSize after optimization? What is the significance of targetFileSize? "numRemovedFiles": "2099","numRemovedBytes": "29658974681","p25FileSize": "29701688","numDeletionVectorsRemoved": "0","m...
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