[CX] NPE in cleanup of AbstractOneInputOneOutputOneFramePushRuntime

2018-06-03T11:12:48.246-04:00 WARN CBAS.util.CleanupUtils [Executor-10:8c91605d8001f6ea454ab3f0e5f62d84] Failure closing a closeable resource
org.apache.hyracks.api.exceptions.HyracksDataException: java.lang.NullPointerException
at org.apache.hyracks.api.exceptions.HyracksDataException.create(HyracksDataException.java:51) ~[hyracks-api.jar:0.0.0-0000]
at org.apache.hyracks.algebricks.runtime.operators.base.AbstractOneInputOneOutputOneFramePushRuntime.close(AbstractOneInputOneOutputOneFramePushRuntime.java:58) ~[algebricks-runtime.jar:0.0.0-0000]
at org.apache.hyracks.algebricks.runtime.operators.meta.AlgebricksMetaOperatorDescriptor$1.close(AlgebricksMetaOperatorDescriptor.java:156) ~[algebricks-runtime.jar:0.0.0-0000]
at org.apache.hyracks.api.util.CleanupUtils.close(CleanupUtils.java:65) [hyracks-api.jar:0.0.0-0000]
at org.apache.hyracks.storage.am.common.dataflow.IndexSearchOperatorNodePushable.close(IndexSearchOperatorNodePushable.java:305) [hyracks-storage-am-common.jar:0.0.0-0000]
at org.apache.hyracks.algebricks.runtime.operators.std.EmptyTupleSourceRuntimeFactory$1.close(EmptyTupleSourceRuntimeFactory.java:65) [algebricks-runtime.jar:0.0.0-0000]
at org.apache.hyracks.algebricks.runtime.operators.meta.AlgebricksMetaOperatorDescriptor$SourcePushRuntime.initialize(AlgebricksMetaOperatorDescriptor.java:111) [algebricks-runtime.jar:0.0.0-0000]
at org.apache.hyracks.api.rewriter.runtime.SuperActivityOperatorNodePushable.lambda$runInParallel$0(SuperActivityOperatorNodePushable.java:208) [hyracks-api.jar:0.0.0-0000]
at java.util.concurrent.FutureTask.run(Unknown Source) [?:?]
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [?:?]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [?:?]
at java.lang.Thread.run(Unknown Source) [?:?]
Caused by: java.lang.NullPointerException
at org.apache.hyracks.algebricks.runtime.operators.base.AbstractOneInputOneOutputOneFramePushRuntime.flushAndReset(AbstractOneInputOneOutputOneFramePushRuntime.java:77) ~[algebricks-runtime.jar:0.0.0-0000]
at org.apache.hyracks.algebricks.runtime.operators.base.AbstractOneInputOneOutputOneFramePushRuntime.flushIfNotFailed(AbstractOneInputOneOutputOneFramePushRuntime.java:84) ~[algebricks-runtime.jar:0.0.0-0000]
at org.apache.hyracks.algebricks.runtime.operators.base.AbstractOneInputOneOutputOneFramePushRuntime.close(AbstractOneInputOneOutputOneFramePushRuntime.java:56) ~[algebricks-runtime.jar:0.0.0-0000]
... 10 more