Github user squito commented on a diff in the pull request:
https://github.com/apache/spark/pull/6935#discussion_r46644563
--- Diff:
core/src/main/scala/org/apache/spark/deploy/history/FsHistoryProvider.scala ---
@@ -175,18 +180,34 @@ private[history] class FsHistoryProvider(conf:
SparkConf, clock: Clock)
// Disable the background thread during tests.
if (!conf.contains("spark.testing")) {
// A task that periodically checks for event log updates on disk.
+ logDebug(s"Scheduling update thread every $UPDATE_INTERVAL_S
seconds")
pool.scheduleWithFixedDelay(getRunner(checkForLogs), 0,
UPDATE_INTERVAL_S, TimeUnit.SECONDS)
if (conf.getBoolean("spark.history.fs.cleaner.enabled", false)) {
// A task that periodically cleans event logs on disk.
pool.scheduleWithFixedDelay(getRunner(cleanLogs), 0,
CLEAN_INTERVAL_S, TimeUnit.SECONDS)
}
+ } else {
+ logDebug("Background update thread disabled for testing")
}
}
override def getListing(): Iterable[FsApplicationHistoryInfo] =
applications.values
- override def getAppUI(appId: String, attemptId: Option[String]):
Option[SparkUI] = {
+ /**
+ * Look up an application attempt
+ * @param appId application ID
+ * @param attemptId Attempt ID, if set
+ * @return the matching attempt, if found
+ */
+ def lookup(appId: String, attemptId: Option[String]):
Option[FsApplicationAttemptInfo] = {
+ applications.get(appId).flatMap { appInfo =>
+ appInfo.attempts.find(_.attemptId == attemptId)
+ }
+ }
+
+ override def getAppUI(appId: String, attemptId: Option[String])
+ : Option[(SparkUI, Long, Option[Any])] = {
--- End diff --
a case class would make it easier to understand the meaning of this return
type
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