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From sandeshh <...@git.apache.org>
Subject [GitHub] incubator-apex-core pull request: APEXCORE-60 Iteration support in...
Date Sun, 20 Dec 2015 05:47:57 GMT
Github user sandeshh commented on a diff in the pull request:

    --- Diff: common/src/main/java/com/datatorrent/common/util/DefaultDelayOperator.java ---
    @@ -0,0 +1,57 @@
    + * Licensed to the Apache Software Foundation (ASF) under one
    + * or more contributor license agreements.  See the NOTICE file
    + * distributed with this work for additional information
    + * regarding copyright ownership.  The ASF licenses this file
    + * to you under the Apache License, Version 2.0 (the
    + * "License"); you may not use this file except in compliance
    + * with the License.  You may obtain a copy of the License at
    + *
    + *   http://www.apache.org/licenses/LICENSE-2.0
    + *
    + * Unless required by applicable law or agreed to in writing,
    + * software distributed under the License is distributed on an
    + * KIND, either express or implied.  See the License for the
    + * specific language governing permissions and limitations
    + * under the License.
    + */
    +package com.datatorrent.common.util;
    +import java.util.ArrayList;
    +import java.util.List;
    + * DefaultDelayOperator. This is the version of BaseDelayOperator that provides no data
loss during recovery. It
    + * incurs a run-time cost per tuple, and all tuples of the checkpoint window will be
part of the checkpoint state.
    + * Therefore if your application can tolerate data loss at recovery, BaseDelayOperator
should be used instead.
    + */
    +public class DefaultDelayOperator<T> extends BaseDelayOperator<T>
    --- End diff --
    Writing the tuples is done in the EndWindow when using WindowDataManager, so the performance
should be same for both.

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