Github user zsxwing commented on a diff in the pull request:
https://github.com/apache/spark/pull/18107#discussion_r119016141
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/streaming/statefulOperators.scala
---
@@ -165,54 +189,88 @@ case class StateStoreSaveExec(
child.execute().mapPartitionsWithStateStore(
getStateId.checkpointLocation,
getStateId.operatorId,
+ storeName = "default",
getStateId.batchId,
keyExpressions.toStructType,
child.output.toStructType,
+ indexOrdinal = None,
sqlContext.sessionState,
Some(sqlContext.streams.stateStoreCoordinator)) { (store, iter) =>
val getKey = GenerateUnsafeProjection.generate(keyExpressions,
child.output)
val numOutputRows = longMetric("numOutputRows")
val numTotalStateRows = longMetric("numTotalStateRows")
val numUpdatedStateRows = longMetric("numUpdatedStateRows")
+ val allUpdatesTimeMs = longMetric("allUpdatesTimeMs")
+ val allRemovalsTimeMs = longMetric("allRemovalsTimeMs")
+ val commitTimeMs = longMetric("commitTimeMs")
outputMode match {
// Update and output all rows in the StateStore.
case Some(Complete) =>
- while (iter.hasNext) {
- val row = iter.next().asInstanceOf[UnsafeRow]
- val key = getKey(row)
- store.put(key.copy(), row.copy())
- numUpdatedStateRows += 1
+ allUpdatesTimeMs += timeTakenMs {
+ while (iter.hasNext) {
+ val row = iter.next().asInstanceOf[UnsafeRow]
+ val key = getKey(row)
+ store.put(key, row)
+ numUpdatedStateRows += 1
+ }
+ }
+ allRemovalsTimeMs += 0
+ commitTimeMs += timeTakenMs {
+ store.commit()
}
- store.commit()
numTotalStateRows += store.numKeys()
- store.iterator().map { case (k, v) =>
+ store.iterator().map { case UnsafeRowPair(_, v) =>
numOutputRows += 1
v.asInstanceOf[InternalRow]
}
// Update and output only rows being evicted from the StateStore
+ // Assumption: watermark predicates must be non-empty if append
mode is allowed
case Some(Append) =>
- while (iter.hasNext) {
- val row = iter.next().asInstanceOf[UnsafeRow]
- val key = getKey(row)
- store.put(key.copy(), row.copy())
- numUpdatedStateRows += 1
+ allUpdatesTimeMs += timeTakenMs {
+ val filteredIter = iter.filter(row =>
!watermarkPredicateForData.get.eval(row))
+ while (filteredIter.hasNext) {
+ val row = filteredIter.next().asInstanceOf[UnsafeRow]
+ val key = getKey(row)
+ store.put(key, row)
+ numUpdatedStateRows += 1
+ }
}
- // Assumption: Append mode can be done only when watermark has
been specified
- store.remove(watermarkPredicateForKeys.get.eval _)
- store.commit()
+ val removalStartTime = System.currentTimeMillis
+ val rangeIter = store.getRange(None, None)
+
+ new NextIterator[InternalRow] {
+ override protected def getNext(): InternalRow = {
+ var removedValueRow: InternalRow = null
+ while(rangeIter.hasNext && removedValueRow == null) {
+ val UnsafeRowPair(keyRow, valueRow) = rangeIter.next()
--- End diff --
Case class's `unapply` will create a `Tuple`. You should not use this Scala
syntactic sugar :)
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