[CX][System-test] ingestion fails to stop when jobs are aborted

"stack" : [ "app//org.apache.hyracks.net.protocols.muxdemux.ChannelSet.markPendingWrite(ChannelSet.java:175)", "app//org.apache.hyracks.net.protocols.muxdemux.ChannelControlBlock.markPendingWrite(ChannelControlBlock.java:157)", "app//org.apache.hyracks.net.protocols.muxdemux.AbstractChannelWriteInterface.adjustChannelWritability(AbstractChannelWriteInterface.java:92)", "app//org.apache.hyracks.net.protocols.muxdemux.AbstractChannelWriteInterface$CloseableBufferAcceptor.error(AbstractChannelWriteInterface.java:151)", "app//org.apache.hyracks.comm.channels.NetworkOutputChannel.fail(NetworkOutputChannel.java:99)", "app//org.apache.hyracks.control.nc.partitions.PipelinedPartition.fail(PipelinedPartition.java:105)", "app//com.couchbase.analytics.runtime.ProgressPartitionDataWriter.fail(ProgressPartitionDataWriter.java:207)", "app//org.apache.hyracks.dataflow.std.base.AbstractReplicateOperatorDescriptor$ReplicatorMaterializerActivityNode$1.fail(AbstractReplicateOperatorDescriptor.java:187)", "app//org.apache.hyracks.api.util.CleanupUtils.fail(CleanupUtils.java:91)", "app//com.couchbase.analytics.runtime.BucketOperatorNodePushable.start(BucketOperatorNodePushable.java:54)", "app//org.apache.asterix.active.ActiveSourceOperatorNodePushable.initialize(ActiveSourceOperatorNodePushable.java:103)", "app//org.apache.hyracks.api.rewriter.runtime.SuperActivityOperatorNodePushable$$Lambda$285/1360234498.run(Unknown Source)", "app//org.apache.hyracks.api.rewriter.runtime.SuperActivityOperatorNodePushable.lambda$runInParallel$0(SuperActivityOperatorNodePushable.java:212)", "app//org.apache.hyracks.api.rewriter.runtime.SuperActivityOperatorNodePushable$$Lambda$286/1654431569.call(Unknown Source)", "java.base@10.0.2/java.util.concurrent.FutureTask.run(Unknown Source)", "java.base@10.0.2/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)", "java.base@10.0.2/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)", "java.base@10.0.2/java.lang.Thread.run(Unknown Source)" ],