org.apache.tez.log.analyzer.TezGroupAnalyzer.java Source code

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Here is the source code for org.apache.tez.log.analyzer.TezGroupAnalyzer.java

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/**
 * 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
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * 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 org.apache.tez.log.analyzer;

import com.google.common.collect.Lists;

import java.io.IOException;
import java.util.List;

/**
 * Print Tez grouper details
 */
public class TezGroupAnalyzer extends BaseAnalyzer {

    // tez grouping can't do anything when original splits is much less than desired
    private final String canNotDoAnythingInTez = "Using original number of splits";
    private final String memoryRequested = "App total resource memory";

    private final List<String> interestedLines = Lists.newLinkedList();
    private final List<String> cantDoAnythingList = Lists.newLinkedList();

    @Override
    public void process(String line) throws IOException {
        if (line.contains("Grouper")) {
            interestedLines.add(line);
            if (line.contains(canNotDoAnythingInTez)) {
                cantDoAnythingList.add(line);
            }
        }
        if (line.contains(memoryRequested)) {
            interestedLines.add(line);
        }
    }

    @Override
    public String getAnalysis() throws IOException {
        StringBuilder sb = new StringBuilder();
        addListToString(interestedLines, sb);
        sb.append("\n\n Can't do anything in tez for the following..i.e can't change parallelism\n\n");
        addListToString(cantDoAnythingList, sb);
        return sb.toString();
    }

    void addListToString(List<String> list, StringBuilder sb) {
        for (String l : list) {
            sb.append(l).append("\n");
        }
    }

    @Override
    public String getName() {
        return "Tez Group Analyzer";
    }

    @Override
    public Object getResult() {
        List<String> result = Lists.newLinkedList();
        result.addAll(interestedLines);
        result.addAll(cantDoAnythingList);
        return result;
    }
}