felipepessoto commented on issue #12387:
URL: https://github.com/apache/gluten/issues/12387#issuecomment-5244364985

   Noting a CI workaround that should be removed together with the fix.
   
   The Delta Spark UT pipeline (#12388) cannot run the two 
`DeletionVectorsSuite` 2B-row tests -- they balloon the forked test JVM to ~13G 
of native memory and get OOM-killed, which wedges sbt and hangs the whole shard 
until the hang watchdog kills it, taking every suite queued behind it with it.
   
   As an interim measure `setup-delta.sh` injects a `fail(...)` as the first 
statement of each of those two test bodies, so they fail fast with a clear 
message instead of hanging the shard, and the two entries sit in 
`known-failures.txt`. They were force-failed rather than ignored precisely so 
the gap stays visible.
   
   When this is fixed, please remove that `sed` block from 
`.github/workflows/util/delta-spark-ut/setup-delta.sh` and drop the two entries 
from `known-failures.txt`, otherwise we permanently lose 2B-row DV read/delete 
coverage. Tracked in #12743.


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