jingz-db commented on code in PR #47528:
URL: https://github.com/apache/spark/pull/47528#discussion_r1699101756
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sql/core/src/main/scala/org/apache/spark/sql/execution/streaming/TransformWithStateExec.scala:
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@@ -396,8 +396,16 @@ case class TransformWithStateExec(
new Path(stateSchemaDir, s"${batchId}_${UUID.randomUUID().toString}")
val metadataPath = new Path(getStateInfo.checkpointLocation,
s"${getStateInfo.operatorId}")
val metadataReader = OperatorStateMetadataReader.createReader(
- metadataPath, hadoopConf, operatorStateMetadataVersion)
- val operatorStateMetadata = metadataReader.read()
+ metadataPath, hadoopConf, operatorStateMetadataVersion, batchId)
+ val operatorStateMetadata = try {
+ metadataReader.read()
+ } catch {
+ // If this is the first time we are running the query, there will be
no metadata
+ // and this error is expected. In this case, we return None.
+ case ex: Exception if batchId == 0 =>
Review Comment:
Shall we move the `if batchId == 0` before `metadataReader.read` to avoid
unnecessary file read?
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