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From: DT-Priyanka <git@git.apache.org>
To: dev@apex.incubator.apache.org
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References: <git-pr-358-apex-malhar@git.apache.org>
In-Reply-To: <git-pr-358-apex-malhar@git.apache.org>
Subject: [GitHub] apex-malhar pull request #358: APEXMALHAR-2172: Updates to JDBC Poll Input O...
Content-Type: text/plain
Message-Id: <20160810053208.07AEEE184E@git1-us-west.apache.org>
Date: Wed, 10 Aug 2016 05:32:08 +0000 (UTC)
archived-at: Wed, 10 Aug 2016 05:32:14 -0000

Github user DT-Priyanka commented on a diff in the pull request:

    https://github.com/apache/apex-malhar/pull/358#discussion_r74187567
  
    --- Diff: library/src/main/java/com/datatorrent/lib/db/jdbc/AbstractJdbcPollInputOperator.java ---
    @@ -80,201 +93,48 @@
      * @tags database, sql, jdbc, partitionable,exactlyOnce
      */
     @Evolving
    -public abstract class AbstractJdbcPollInputOperator<T> extends AbstractStoreInputOperator<T, JdbcStore>
    -    implements ActivationListener<Context>, IdleTimeHandler, Partitioner<AbstractJdbcPollInputOperator<T>>
    +public abstract class AbstractJdbcPollInputOperator<T> extends AbstractStoreInputOperator<T, JdbcStore> implements
    +    ActivationListener<OperatorContext>, IdleTimeHandler, Partitioner<AbstractJdbcPollInputOperator<T>>
     {
    +  private static int DEFAULT_QUEUE_CAPACITY = 4 * 1024 * 1024;
    +  private static int DEFAULT_POLL_INTERVAL = 10 * 1000;
    +  private static int DEFAULT_FETCH_SIZE = 20000;
       /**
        * poll interval in milliseconds
        */
    -  private static int pollInterval = 10000;
    +  private int pollInterval = DEFAULT_POLL_INTERVAL;
    +  private int queueCapacity = DEFAULT_QUEUE_CAPACITY;
    +  private int fetchSize = DEFAULT_FETCH_SIZE;
     
       @Min(1)
       private int partitionCount = 1;
       protected transient int operatorId;
    -  protected transient boolean isReplayed;
    -  protected transient boolean isPollable;
    +  protected boolean isPollerPartition;
       protected int batchSize;
    -  protected static int fetchSize = 20000;
    +
       /**
        * Map of windowId to <lower bound,upper bound> of the range key
        */
    -  protected transient MutablePair<String, String> currentWindowRecoveryState;
    +  protected transient MutablePair<Integer, Integer> currentWindowRecoveryState;
    +  private transient DSLContext create;
     
    -  /**
    -   * size of the emit queue used to hold polled records before emit
    -   */
    -  private static int queueCapacity = 4 * 1024 * 1024;
       private transient volatile boolean execute;
       private transient AtomicReference<Throwable> cause;
    +  private String tableName;
    +  private String columnsExpression;
    +  private String whereCondition = null;
    +  private String key;
       protected transient int spinMillis;
    -  private transient OperatorContext context;
    -  protected String tableName;
    -  protected String key;
       protected long currentWindowId;
    -  protected KeyValPair<String, String> rangeQueryPair;
    -  protected String lower;
    -  protected String upper;
    -  protected boolean recovered;
    -  protected boolean isPolled;
    -  protected String whereCondition = null;
    -  protected String previousUpperBound;
    -  protected String highestPolled;
    -  private static final String user = "";
    -  private static final String password = "";
    -  /**
    -   * thread to poll database
    -   */
    -  private transient Thread dbPoller;
    -  protected transient ArrayBlockingQueue<List<T>> emitQueue;
    +  protected KeyValPair<Integer, Integer> rangeQueryPair;
    +  protected Integer lower;
    +  protected transient boolean isPolled;
    +  protected transient Integer lastPolledBound;
    +  protected transient Integer lastEmittedRecord;
    --- End diff --
    
    I am doing a null check and those variables are compared and assigned to each other so won't do that.


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