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From poornachandra <...@git.apache.org>
Subject [GitHub] incubator-tephra pull request #32: (TEPHRA-215) (TEPHRA-218) Use single thre...
Date Tue, 07 Feb 2017 17:43:49 GMT
Github user poornachandra commented on a diff in the pull request:

    --- Diff: tephra-hbase-compat-1.1-base/src/main/java/org/apache/tephra/hbase/txprune/PruneUpperBoundWriter.java
    @@ -18,55 +18,48 @@
     package org.apache.tephra.hbase.txprune;
    +import com.google.common.util.concurrent.AbstractIdleService;
     import org.apache.commons.logging.Log;
     import org.apache.commons.logging.LogFactory;
    -import org.apache.hadoop.hbase.TableName;
    -import org.apache.tephra.hbase.coprocessor.TransactionProcessor;
     import java.io.IOException;
    +import java.util.Iterator;
    +import java.util.Objects;
    +import java.util.Queue;
    +import java.util.concurrent.ConcurrentLinkedQueue;
     import java.util.concurrent.TimeUnit;
    -import java.util.concurrent.atomic.AtomicBoolean;
    -import java.util.concurrent.atomic.AtomicLong;
      * Thread that will write the the prune upper bound
    -public class PruneUpperBoundWriter {
    -  private static final Log LOG = LogFactory.getLog(TransactionProcessor.class);
    +public class PruneUpperBoundWriter extends AbstractIdleService {
    +  private static final Log LOG = LogFactory.getLog(PruneUpperBoundWriter.class);
    -  private final TableName pruneStateTable;
       private final DataJanitorState dataJanitorState;
    -  private final byte[] regionName;
    -  private final String regionNameAsString;
       private final long pruneFlushInterval;
    -  private final AtomicLong pruneUpperBound;
    -  private final AtomicBoolean shouldFlush;
    +  private final Queue<PruneInfo> pruneEntries;
       private Thread flushThread;
       private long lastChecked;
    -  public PruneUpperBoundWriter(DataJanitorState dataJanitorState, TableName pruneStateTable,
String regionNameAsString,
    -                               byte[] regionName, long pruneFlushInterval) {
    -    this.pruneStateTable = pruneStateTable;
    +  public PruneUpperBoundWriter(DataJanitorState dataJanitorState, long pruneFlushInterval)
         this.dataJanitorState = dataJanitorState;
    -    this.regionName = regionName;
    -    this.regionNameAsString = regionNameAsString;
         this.pruneFlushInterval = pruneFlushInterval;
    -    this.pruneUpperBound = new AtomicLong();
    -    this.shouldFlush = new AtomicBoolean(false);
    +    this.pruneEntries = new ConcurrentLinkedQueue<>();
    --- End diff --
    Since the flush thread is started in the `startUp` method, we don't need to start it in
the constructor.

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