dongjoon-hyun commented on a change in pull request #24005: [SPARK-27085][SQL]
Migrate CSV to File Data Source V2
URL: https://github.com/apache/spark/pull/24005#discussion_r268047064
##########
File path:
sql/core/src/test/scala/org/apache/spark/sql/FileBasedDataSourceSuite.scala
##########
@@ -470,22 +471,24 @@ class FileBasedDataSourceSuite extends QueryTest with
SharedSQLContext with Befo
}
test("SPARK-25237 compute correct input metrics in FileScanRDD") {
- withTempPath { p =>
- val path = p.getAbsolutePath
- spark.range(1000).repartition(1).write.csv(path)
- val bytesReads = new mutable.ArrayBuffer[Long]()
- val bytesReadListener = new SparkListener() {
- override def onTaskEnd(taskEnd: SparkListenerTaskEnd) {
- bytesReads += taskEnd.taskMetrics.inputMetrics.bytesRead
+ withSQLConf(SQLConf.USE_V1_SOURCE_READER_LIST.key -> "csv") {
+ withTempPath { p =>
+ val path = p.getAbsolutePath
+ spark.range(1000).repartition(1).write.csv(path)
+ val bytesReads = new mutable.ArrayBuffer[Long]()
+ val bytesReadListener = new SparkListener() {
+ override def onTaskEnd(taskEnd: SparkListenerTaskEnd) {
+ bytesReads += taskEnd.taskMetrics.inputMetrics.bytesRead
+ }
+ }
+ sparkContext.addSparkListener(bytesReadListener)
+ try {
+ spark.read.csv(path).limit(1).collect()
+ sparkContext.listenerBus.waitUntilEmpty(1000L)
+ assert(bytesReads.sum === 7860)
+ } finally {
+ sparkContext.removeSparkListener(bytesReadListener)
}
- }
- sparkContext.addSparkListener(bytesReadListener)
- try {
- spark.read.csv(path).limit(1).collect()
- sparkContext.listenerBus.waitUntilEmpty(1000L)
- assert(bytesReads.sum === 7860)
- } finally {
- sparkContext.removeSparkListener(bytesReadListener)
}
}
}
Review comment:
If this fails due to the number of bytes, can we have test coverage for
both? Note that only `try` part is changed.
```scala
test("SPARK-25237 compute correct input metrics in FileScanRDD") {
withTempPath { p =>
val path = p.getAbsolutePath
spark.range(1000).repartition(1).write.csv(path)
val bytesReads = new mutable.ArrayBuffer[Long]()
val bytesReadListener = new SparkListener() {
override def onTaskEnd(taskEnd: SparkListenerTaskEnd) {
bytesReads += taskEnd.taskMetrics.inputMetrics.bytesRead
}
}
sparkContext.addSparkListener(bytesReadListener)
try {
Seq(("csv", 7860), ("", 3930)).foreach { case (list, sum) =>
bytesReads.clear()
withSQLConf(SQLConf.USE_V1_SOURCE_READER_LIST.key -> list) {
spark.read.csv(path).limit(1).collect()
sparkContext.listenerBus.waitUntilEmpty(1000L)
assert(bytesReads.sum === sum)
}
}
} finally {
sparkContext.removeSparkListener(bytesReadListener)
}
}
}
```
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