steveloughran commented on a change in pull request #33332:
URL: https://github.com/apache/spark/pull/33332#discussion_r669736316
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File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/BasicWriteStatsTracker.scala
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@@ -166,7 +166,7 @@ class BasicWriteTaskStatsTracker(hadoopConf: Configuration)
}
if (numSubmittedFiles != numFiles) {
- logInfo(s"Expected $numSubmittedFiles files, but only saw $numFiles. " +
+ logWarning(s"Expected $numSubmittedFiles files, but only saw $numFiles.
" +
Review comment:
This used to happen sometimes on code writing files to S3 where a cached
HEAD-generated 404 was being returned even after the upload.
* Not going to be an issue on S3 any more, never was on GCS/Azure.
* s3a magic committer creates marker files for this code
* Are there any FileOutputFormat's which don't write zero byte files if the
client didn't write the output?
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