AllStagesPage
== [[AllStagesPage]] Stages for All Jobs Page
AllStagesPage is a web page (section) that is registered with the spark-webui-StagesTab.md[Stages tab] that <
.Stages Tab in web UI for FAIR scheduling mode (with pools only) image::spark-webui-stages-alljobs.png[align="center"]
[[pool-names]] In spark-scheduler-SchedulingMode.md#FAIR[FAIR scheduling mode] you have access to the table showing the scheduler pools as well as the pool names per stage.
NOTE: Pool names are calculated using ROOT:SparkContext.md#getAllPools[SparkContext.getAllPools].
Internally, AllStagesPage is a spark-webui-WebUIPage.md[WebUIPage] with access to the parent spark-webui-StagesTab.md[Stages tab] and more importantly the spark-webui-JobProgressListener.md[JobProgressListener] to have access to current state of the entire Spark application.
=== [[render]] Rendering AllStagesPage (render method)
[source, scala]¶
render(request: HttpServletRequest): Seq[Node]¶
render generates a HTML page to display in a web browser.
It uses the parent's spark-webui-JobProgressListener.md[JobProgressListener] to know about:
- active stages (as
activeStages) - pending stages (as
pendingStages) - completed stages (as
completedStages) - failed stages (as
failedStages) - the number of completed stages (as
numCompletedStages) - the number of failed stages (as
numFailedStages)
NOTE: Stage information is available as scheduler:spark-scheduler-StageInfo.md[StageInfo] object.
There are 4 different tables for the different states of stages - active, pending, completed, and failed. They are displayed only when there are stages in a given state.
.Stages Tab in web UI for FAIR scheduling mode (with pools and stages) image::spark-webui-stages.png[align="center"]
You could also notice "retry" for stage when it was retried.
CAUTION: FIXME A screenshot