Shixiong Zhu created SPARK-23470: ------------------------------------ Summary: org.apache.spark.ui.jobs.ApiHelper.lastStageNameAndDescription is too slow Key: SPARK-23470 URL: https://issues.apache.org/jira/browse/SPARK-23470 Project: Spark Issue Type: Bug Components: Web UI Affects Versions: 2.3.0 Reporter: Shixiong Zhu
I was testing 2.3.0 RC3 and found that it's easy to hit "read timeout" in Spark UI. The stack dump says it was running "org.apache.spark.ui.jobs.ApiHelper.lastStageNameAndDescription". {code} "SparkUI-59" #59 daemon prio=5 os_prio=0 tid=0x00007fc15b0a3000 nid=0x8dc runnable [0x00007fc0ce9f8000] java.lang.Thread.State: RUNNABLE at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.apache.spark.util.kvstore.KVTypeInfo$MethodAccessor.get(KVTypeInfo.java:154) at org.apache.spark.util.kvstore.InMemoryStore$InMemoryView.compare(InMemoryStore.java:248) at org.apache.spark.util.kvstore.InMemoryStore$InMemoryView.lambda$iterator$2(InMemoryStore.java:214) at org.apache.spark.util.kvstore.InMemoryStore$InMemoryView$$Lambda$36/1834982692.compare(Unknown Source) at java.util.TimSort.binarySort(TimSort.java:296) at java.util.TimSort.sort(TimSort.java:239) at java.util.Arrays.sort(Arrays.java:1512) at java.util.ArrayList.sort(ArrayList.java:1460) at java.util.stream.SortedOps$RefSortingSink.end(SortedOps.java:387) at java.util.stream.Sink$ChainedReference.end(Sink.java:258) at java.util.stream.StreamSpliterators$AbstractWrappingSpliterator.fillBuffer(StreamSpliterators.java:210) at java.util.stream.StreamSpliterators$AbstractWrappingSpliterator.doAdvance(StreamSpliterators.java:161) at java.util.stream.StreamSpliterators$WrappingSpliterator.tryAdvance(StreamSpliterators.java:300) at java.util.Spliterators$1Adapter.hasNext(Spliterators.java:681) at org.apache.spark.util.kvstore.InMemoryStore$InMemoryIterator.hasNext(InMemoryStore.java:278) at org.apache.spark.status.AppStatusStore.lastStageAttempt(AppStatusStore.scala:101) at org.apache.spark.ui.jobs.ApiHelper$$anonfun$38.apply(StagePage.scala:1014) at org.apache.spark.ui.jobs.ApiHelper$$anonfun$38.apply(StagePage.scala:1014) at org.apache.spark.status.AppStatusStore.asOption(AppStatusStore.scala:408) at org.apache.spark.ui.jobs.ApiHelper$.lastStageNameAndDescription(StagePage.scala:1014) at org.apache.spark.ui.jobs.JobDataSource.org$apache$spark$ui$jobs$JobDataSource$$jobRow(AllJobsPage.scala:434) at org.apache.spark.ui.jobs.JobDataSource$$anonfun$24.apply(AllJobsPage.scala:412) at org.apache.spark.ui.jobs.JobDataSource$$anonfun$24.apply(AllJobsPage.scala:412) at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234) at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234) at scala.collection.immutable.List.foreach(List.scala:381) at scala.collection.generic.TraversableForwarder$class.foreach(TraversableForwarder.scala:35) at scala.collection.mutable.ListBuffer.foreach(ListBuffer.scala:45) at scala.collection.TraversableLike$class.map(TraversableLike.scala:234) at scala.collection.AbstractTraversable.map(Traversable.scala:104) at org.apache.spark.ui.jobs.JobDataSource.<init>(AllJobsPage.scala:412) at org.apache.spark.ui.jobs.JobPagedTable.<init>(AllJobsPage.scala:504) at org.apache.spark.ui.jobs.AllJobsPage.jobsTable(AllJobsPage.scala:246) at org.apache.spark.ui.jobs.AllJobsPage.render(AllJobsPage.scala:295) at org.apache.spark.ui.WebUI$$anonfun$3.apply(WebUI.scala:98) at org.apache.spark.ui.WebUI$$anonfun$3.apply(WebUI.scala:98) at org.apache.spark.ui.JettyUtils$$anon$3.doGet(JettyUtils.scala:90) at javax.servlet.http.HttpServlet.service(HttpServlet.java:687) at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:848) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:584) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1180) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:512) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1112) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) at org.eclipse.jetty.server.handler.gzip.GzipHandler.handle(GzipHandler.java:493) at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:213) {code} According to the heap dump, there are 954 JobDataWrapper and 54690 StageDataWrapper. It's obvious that the UI will be slow since we need to sort 54690 items for 954 jobs. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org