Github user rekhajoshm commented on a diff in the pull request:
https://github.com/apache/spark/pull/7602#discussion_r35510171
--- Diff:
core/src/main/scala/org/apache/spark/ui/scope/RDDOperationGraph.scala ---
@@ -181,17 +181,26 @@ private[ui] object RDDOperationGraph extends Logging {
}
/** Return the dot representation of a subgraph in an RDDOperationGraph.
*/
- private def makeDotSubgraph(cluster: RDDOperationCluster, indent:
String): String = {
+ private def makeDotSubgraph(cluster: RDDOperationCluster, indent:
StringBuilder): String = {
val subgraph = new StringBuilder
- subgraph.append(indent + s"subgraph cluster${cluster.id} {\n")
- subgraph.append(indent + s""" label="${cluster.name}";\n""")
- cluster.childNodes.foreach { node =>
- subgraph.append(indent + s" ${makeDotNode(node)};\n")
- }
- cluster.childClusters.foreach { cscope =>
- subgraph.append(makeDotSubgraph(cscope, indent + " "))
+ try {
+ subgraph.append(indent).append(s"subgraph cluster${cluster.id} {\n")
+ subgraph.append(indent).append(s""" label="${cluster.name}";\n""")
+ cluster.childNodes.foreach { node =>
+ subgraph.append(indent).append(s" ${makeDotNode(node)};\n")
+ }
+ cluster.childClusters.foreach { cscope =>
+ subgraph.append(makeDotSubgraph(cscope, indent.append(" ")))
+ }
+ subgraph.append(indent).append("}\n")
+ subgraph.toString()
+ } catch {
+ case oom: OutOfMemoryError =>
--- End diff --
Hi @JoshRosen - The essential fix I did was to use same stringbuilder
object rather than creating multiple string/stringbuilders within loop which
caused oom/heap issue.However have added SparkException just incase. Can you
please review? Thanks!
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