beliefer commented on code in PR #45046:
URL: https://github.com/apache/spark/pull/45046#discussion_r1482658250
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connector/connect/client/jvm/src/main/scala/org/apache/spark/sql/SparkSession.scala:
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@@ -854,7 +855,7 @@ object SparkSession extends Logging {
// the remote() function, as it takes precedence over the SPARK_REMOTE
environment variable.
private val builder = SparkConnectClient.builder().loadFromEnvironment()
private var client: SparkConnectClient = _
- private[this] val options = new scala.collection.mutable.HashMap[String,
String]
+ private[this] val options = new ConcurrentHashMap[String, String]
Review Comment:
We cannot assume what threading mode the client will adopt.
No matter what the concurrency in user scene, we can avoid using
`synchronized` with `ConcurrentHashMap`.
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