https://community.cloudera.com/t5/Support-Questions/Hello-Team-getting-Vertex-errror-while-running-a-script-on/m-p/301553#M220739 <P>Getting below error query completes almost to 99 % at the end its getting failed during shuffle phase.Thanks in advance please let me know the reason.</P><P>ERROR : Vertex failed, vertexName=Reducer 3, vertexId=vertex_1594037379069_89091_1_02, diagnostics=[Task failed, taskId=task_1594037379069_89091_1_02_000052, diagnostics=[TaskAttempt 0 failed, info=[Error: Error while running task ( failure ) : org.apache.tez.runtime.library.common.shuffle.orderedgrouped.Shuffle$ShuffleError: error in shuffle in Fetcher_O {Reducer_2} #12<BR />at org.apache.tez.runtime.library.common.shuffle.orderedgrouped.Shuffle$RunShuffleCallable.callInternal(Shuffle.java:305)<BR />at org.apache.tez.runtime.library.common.shuffle.orderedgrouped.Shuffle$RunShuffleCallable.callInternal(Shuffle.java:287)<BR />at org.apache.tez.common.CallableWithNdc.call(CallableWithNdc.java:36)<BR />at com.google.common.util.concurrent.TrustedListenableFutureTask$TrustedFutureInterruptibleTask.runInterruptibly(TrustedListenableFutureTask.java:125)<BR />at com.google.common.util.concurrent.InterruptibleTask.run(InterruptibleTask.java:69)<BR />at com.google.common.util.concurrent.TrustedListenableFutureTask.run(TrustedListenableFutureTask.java:78)<BR />at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)<BR />at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)<BR />at java.lang.Thread.run(Thread.java:748)<BR />Caused by: java.io.IOException: Reducer_2: Shuffle failed with too many fetch failures and insufficient progress!failureCounts=5, pendingInputs=5, fetcherHealthy=false, reducerProgressedEnough=true, reducerStalled=true</P> Sun, 16 Aug 2020 02:57:20 GMT Sham 2020-08-16T02:57:20Z