[BATCHCMP-379] Support subdirectory reads#62
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anuvedverma merged 3 commits intov3.5.6-lyftfrom Dec 6, 2025
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(cherry picked from commit 984bf78)
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Legal RiskThe following dependencies were released under a license that RecommendationWhile merging is not directly blocked, it's best to pause and consider what it means to use this license before continuing. If you are unsure, reach out to your security team or Semgrep admin to address this issue. EPL-1.0
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(cherry picked from commit 984bf78)
Brings Spark 3.3 patch #40 into our Spark 3.5 fork, with a couple small modifications:
spark.sql.sources.readPartitionWithSubdirectory.enabledtofalseby default (then set totruein spark wrapper https://github.com/lyft/spark-private/pull/1575)listLeafDirStatusesandlistLeafDirStatusesfromSparkHadoopUtil.scala-- this PR brings them back for our forkThis patch is needed because there are a large number of tables with nested subdirectories (eg. most tables under
featureschema, generated by featureservice) -- see thread for more context.Eventually, we want to fix underlying tables that rely on nested subdirectories, and get rid of this patch & config entirely. But fixing these tables will take a longer dedicated effort. Created backlog ticket BATCHCMP-459 for this effort in the future.