heyihong commented on code in PR #54016:
URL: https://github.com/apache/spark/pull/54016#discussion_r2736731819
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sql/connect/common/src/main/scala/org/apache/spark/sql/connect/client/SparkConnectClient.scala:
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@@ -1103,7 +1104,13 @@ object SparkConnectClient {
responseListener: ClientCall.Listener[RespT],
headers: Metadata): Unit = {
metadata.foreach { case (key, value) =>
- headers.put(Metadata.Key.of(key,
Metadata.ASCII_STRING_MARSHALLER), value)
+ if (key != null && key.endsWith("-bin")) {
Review Comment:
No problem! IMHO, the code might be simpler or more understandable if we
handle these null checks elsewhere (e.g., in the constructor), if needed. An
analogy is that, to guarantee thread safety, we don’t need to add
synchronization or atomic values to every class.
Besides, a null key or a null value will also cause
`headers.put(Metadata.Key.of(key, Metadata.ASCII_STRING_MARSHALLER), value)` to
fail.
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