LuciferYang commented on PR #39415:
URL: https://github.com/apache/spark/pull/39415#issuecomment-1373173957
```
13:45:13.014 ERROR
org.apache.spark.sql.execution.streaming.StreamingQueryListenerBus: Listener
StreamingQueryStatusListener threw an exception
java.lang.NullPointerException
at
org.apache.spark.status.protobuf.StoreTypes$StreamingQueryData$Builder.setName(StoreTypes.java:57107)
at
org.apache.spark.status.protobuf.sql.StreamingQueryDataSerializer.serialize(StreamingQueryDataSerializer.scala:33)
at
org.apache.spark.status.protobuf.KVStoreProtobufSerializer.serialize(KVStoreProtobufSerializer.scala:29)
at org.apache.spark.util.kvstore.RocksDB.write(RocksDB.java:188)
at
org.apache.spark.status.ElementTrackingStore.write(ElementTrackingStore.scala:123)
at
org.apache.spark.status.ElementTrackingStore.write(ElementTrackingStore.scala:127)
at
org.apache.spark.sql.streaming.ui.StreamingQueryStatusListener.onQueryStarted(StreamingQueryStatusListener.scala:82)
at
org.apache.spark.sql.execution.streaming.StreamingQueryListenerBus.doPostEvent(StreamingQueryListenerBus.scala:131)
at
org.apache.spark.sql.execution.streaming.StreamingQueryListenerBus.doPostEvent(StreamingQueryListenerBus.scala:43)
at org.apache.spark.util.ListenerBus.postToAll(ListenerBus.scala:117)
at org.apache.spark.util.ListenerBus.postToAll$(ListenerBus.scala:101)
at
org.apache.spark.sql.execution.streaming.StreamingQueryListenerBus.postToAll(StreamingQueryListenerBus.scala:88)
at
org.apache.spark.sql.execution.streaming.StreamingQueryListenerBus.post(StreamingQueryListenerBus.scala:77)
at
org.apache.spark.sql.streaming.StreamingQueryManager.postListenerEvent(StreamingQueryManager.scala:231)
at
org.apache.spark.sql.execution.streaming.StreamExecution.postEvent(StreamExecution.scala:402)
at
org.apache.spark.sql.execution.streaming.StreamExecution.org$apache$spark$sql$execution$streaming$StreamExecution$$runStream(StreamExecution.scala:278)
at
org.apache.spark.sql.execution.streaming.StreamExecution$$anon$1.run(StreamExecution.scala:207)
```
https://github.com/apache/spark/blob/99739ae068d6ad828ba3453af2a8c738ab37a3a8/sql/core/src/main/scala/org/apache/spark/status/protobuf/sql/StreamingQueryDataSerializer.scala#L33
`data.name` still needs to be protected to avoid NPE
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