maropu commented on a change in pull request #32865:
URL: https://github.com/apache/spark/pull/32865#discussion_r649630875
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala
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@@ -53,28 +54,60 @@ import org.apache.spark.util.Utils
object SQLConf {
- private[sql] val sqlConfEntries =
- new ConcurrentHashMap[String, ConfigEntry[_]]()
+ private[this] val sqlConfEntriesUpdateLock = new Object
- val staticConfKeys: java.util.Set[String] =
- java.util.Collections.synchronizedSet(new java.util.HashSet[String]())
+ @volatile
+ private[this] var sqlConfEntries: util.Map[String, ConfigEntry[_]] =
util.Collections.emptyMap()
- private def register(entry: ConfigEntry[_]): Unit =
sqlConfEntries.merge(entry.key, entry,
- (existingConfigEntry, newConfigEntry) => {
- require(existingConfigEntry == null,
- s"Duplicate SQLConfigEntry. ${newConfigEntry.key} has been registered")
- newConfigEntry
- }
- )
+ private[this] val staticConfKeysUpdateLock = new Object
Review comment:
Q: we need the two separate locks for the static/non-static configs?
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