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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (APEXCORE-291) Provide a way for an operator to specify its metric aggregator instance
Date Thu, 24 Dec 2015 06:01:49 GMT

    [ https://issues.apache.org/jira/browse/APEXCORE-291?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15070614#comment-15070614
] 

ASF GitHub Bot commented on APEXCORE-291:
-----------------------------------------

Github user chinmaykolhatkar commented on a diff in the pull request:

    https://github.com/apache/incubator-apex-core/pull/190#discussion_r48397509
  
    --- Diff: engine/src/main/java/com/datatorrent/stram/plan/logical/MetricAggregatorMeta.java
---
    @@ -0,0 +1,82 @@
    +/**
    + * 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
    + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
    + * KIND, either express or implied.  See the License for the
    + * specific language governing permissions and limitations
    + * under the License.
    + */
    +package com.datatorrent.stram.plan.logical;
    +
    +import java.io.Serializable;
    +import java.util.Collection;
    +import java.util.Map;
    +
    +import javax.validation.constraints.NotNull;
    +
    +import com.google.common.base.Preconditions;
    +
    +import com.datatorrent.api.AutoMetric;
    +
    +public final class MetricAggregatorMeta implements Serializable
    --- End diff --
    
    Can you add javadoc which describes the class.


> Provide a way for an operator to specify its metric aggregator instance
> -----------------------------------------------------------------------
>
>                 Key: APEXCORE-291
>                 URL: https://issues.apache.org/jira/browse/APEXCORE-291
>             Project: Apache Apex Core
>          Issue Type: Improvement
>            Reporter: Chandni Singh
>            Assignee: Chandni Singh
>
> Need a way to let an operator to provide its default metrics aggregator instance.
> If an operator class implements AutoMetric.Aggregator then use that logical instance
of the operator class as the default metrics aggregator.



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