attilapiros commented on a change in pull request #23393:
[SPARK-26288][CORE]add initRegisteredExecutorsDB
URL: https://github.com/apache/spark/pull/23393#discussion_r265152639
##########
File path:
core/src/main/scala/org/apache/spark/deploy/ExternalShuffleService.scala
##########
@@ -58,9 +61,39 @@ class ExternalShuffleService(sparkConf: SparkConf,
securityManager: SecurityMana
private val shuffleServiceSource = new ExternalShuffleServiceSource
+ protected def findRegisteredExecutorsDBFile(dbName: String): File = {
+ val localDirs =
sparkConf.getOption("spark.local.dir").map(_.split(",")).getOrElse(Array())
+ var dbFile: File = null
Review comment:
To be precise, a `map` after a `find` is needed:
```
val localDirs =
sparkConf.getOption("spark.local.dir").map(_.split(",")).getOrElse(Array())
if (localDirs.length >= 1) {
new File(localDirs.find(new File(_,
dbName).exists()).getOrElse(localDirs(0)), dbName)
} else {
logWarning(s"'spark.local.dir' should be set first.")
null
}
```
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