Description
ParquetFileFormat leaks open files in some cases. This issue aims to register task completion listener first.
test("SPARK-23390 Register task completion listeners first in ParquetFileFormat") { withSQLConf(SQLConf.PARQUET_VECTORIZED_READER_BATCH_SIZE.key -> s"${Int.MaxValue}") { withTempDir { dir => val basePath = dir.getCanonicalPath Seq(0).toDF("a").write.format("parquet").save(new Path(basePath, "first").toString) Seq(1).toDF("a").write.format("parquet").save(new Path(basePath, "second").toString) val df = spark.read.parquet( new Path(basePath, "first").toString, new Path(basePath, "second").toString) val e = intercept[SparkException] { df.collect() } assert(e.getCause.isInstanceOf[OutOfMemoryError]) } } }