laglangyue commented on code in PR #43526:
URL: https://github.com/apache/spark/pull/43526#discussion_r1389149886
##########
sql/core/src/main/scala/org/apache/spark/sql/execution/streaming/HDFSMetadataLog.scala:
##########
@@ -49,10 +49,11 @@ import org.apache.spark.sql.internal.SQLConf
class HDFSMetadataLog[T <: AnyRef : ClassTag](sparkSession: SparkSession,
path: String)
extends MetadataLog[T] with Logging {
- private implicit val formats = Serialization.formats(NoTypeHints)
+ private implicit val formats: Formats = Serialization.formats(NoTypeHints)
/** Needed to serialize type T into JSON when using Jackson */
- private implicit val manifest =
Manifest.classType[T](implicitly[ClassTag[T]].runtimeClass)
+ private implicit val manifest: Manifest[T] =
Review Comment:
log is
```shell
java.lang.ClassCastException: class [Ljava.lang.Object; cannot be cast to
class [Lorg.apache.spark.sql.execution.streaming.FileStreamSource$FileEntry;
([Ljava.lang.Object; is in module java.base of loader 'bootstrap';
[Lorg.apache.spark.sql.execution.streaming.FileStreamSource$FileEntry; is in
unnamed module of loader 'app')
at
org.apache.spark.sql.execution.streaming.FileStreamSourceLog.restore(FileStreamSourceLog.scala:119)
at
org.apache.spark.sql.execution.streaming.FileStreamSource.<init>(FileStreamSource.scala:117)
at
org.apache.spark.sql.execution.datasources.DataSource.createSource(DataSource.scala:303)
at
org.apache.spark.sql.execution.streaming.MicroBatchExecution$$anonfun$1.$anonfun$applyOrElse$1(MicroBatchExecution.scala:124)
at scala.collection.mutable.HashMap.getOrElseUpdate(HashMap.scala:469)
at
org.apache.spark.sql.execution.streaming.MicroBatchExecution$$anonfun$1.applyOrElse(MicroBatchExecution.scala:121)
at
org.apache.spark.sql.execution.streaming.MicroBatchExecution$$anonfun$1.applyOrElse(MicroBatchExecution.scala:119)
```
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