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Date: Tue, 7 Feb 2017 07:50:42 +0000 (UTC)
From: "ASF GitHub Bot (JIRA)" <jira@apache.org>
To: dev@tephra.incubator.apache.org
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Subject: [jira] [Commented] (TEPHRA-214) Provide a way to debug Transaction
 Pruning progress
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archived-at: Tue, 07 Feb 2017 07:50:51 -0000


    [ https://issues.apache.org/jira/browse/TEPHRA-214?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15855517#comment-15855517 ] 

ASF GitHub Bot commented on TEPHRA-214:
---------------------------------------

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

    https://github.com/apache/incubator-tephra/pull/31#discussion_r99750227
  
    --- Diff: tephra-hbase-compat-1.1-base/src/main/java/org/apache/tephra/hbase/txprune/InvalidListPruningDebug.java ---
    @@ -0,0 +1,191 @@
    +/*
    + * 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 org.apache.tephra.hbase.txprune;
    +
    +import com.google.common.collect.MinMaxPriorityQueue;
    +import com.google.gson.Gson;
    +import org.apache.hadoop.conf.Configuration;
    +import org.apache.hadoop.hbase.TableName;
    +import org.apache.hadoop.hbase.client.Connection;
    +import org.apache.hadoop.hbase.client.ConnectionFactory;
    +import org.apache.hadoop.hbase.client.Table;
    +import org.apache.hadoop.hbase.util.Bytes;
    +import org.apache.tephra.TxConstants;
    +import org.apache.tephra.txprune.RegionPruneInfo;
    +import org.slf4j.Logger;
    +import org.slf4j.LoggerFactory;
    +
    +import java.io.IOException;
    +import java.io.PrintWriter;
    +import java.util.Comparator;
    +import java.util.LinkedList;
    +import java.util.List;
    +import java.util.Queue;
    +import javax.annotation.Nullable;
    +
    +/**
    + * Invalid List Pruning Debug Tool.
    + */
    +public class InvalidListPruningDebug {
    +  private static final Logger LOG = LoggerFactory.getLogger(InvalidListPruningDebug.class);
    +  private static final Gson GSON = new Gson();
    +  private DataJanitorState dataJanitorState;
    +
    +  /**
    +   * Initialize the Invalid List Debug Tool.
    +   * @param conf {@link Configuration}
    +   * @throws IOException
    +   */
    +  public void initialize(final Configuration conf) throws IOException {
    +    LOG.info("InvalidListPruningDebugMain : initialize method called");
    --- End diff --
    
    This can be changed to debug log


> Provide a way to debug Transaction Pruning progress
> ---------------------------------------------------
>
>                 Key: TEPHRA-214
>                 URL: https://issues.apache.org/jira/browse/TEPHRA-214
>             Project: Tephra
>          Issue Type: Improvement
>            Reporter: Gokul Gunasekaran
>            Assignee: Gokul Gunasekaran
>
> It would be good to get information about what regions are lagging that might be useful to debug why transaction pruning might not be happening. We do print debug information but this method could be invoked on a need-basis outside of the regular pruning operation.


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