yaooqinn commented on pull request #35117:
URL: https://github.com/apache/spark/pull/35117#issuecomment-1007172379
```
scala> spark.range(0, 3, 1, 4).write.option("compression",
"zstd").orc("./spark-warehouse/zstd_2")
22/01/07 14:26:36 WARN BasicWriteTaskStatsTracker: Expected 1 files, but
only saw 0. This could be due to the output format not writing empty files, or
files being not immediately visible in the filesystem.
scala> spark.range(0, 3, 1, 4).write.option("compression",
"zstd").orc("./spark-warehouse/zstd_3")
22/01/07 14:26:39 WARN BasicWriteTaskStatsTracker: Expected 1 files, but
only saw 0. This could be due to the output format not writing empty files, or
files being not immediately visible in the filesystem.
scala> spark.range(0, 3, 1, 4).write.option("compression",
"zstd").orc("./spark-warehouse/zstd_4")
22/01/07 14:26:41 WARN BasicWriteTaskStatsTracker: Expected 1 files, but
only saw 0. This could be due to the output format not writing empty files, or
files being not immediately visible in the filesystem.
scala> spark.range(0, 3, 1, 4).write.option("compression",
"zstd").orc("./spark-warehouse/zstd_5")
22/01/07 14:26:44 WARN BasicWriteTaskStatsTracker: Expected 1 files, but
only saw 0. This could be due to the output format not writing empty files, or
files being not immediately visible in the filesystem.
```
w/ more rounds
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