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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (APEXMALHAR-1957) Improve HBasePOJOInputOperator with support for threaded read
Date Thu, 23 Jun 2016 05:23:16 GMT

    [ https://issues.apache.org/jira/browse/APEXMALHAR-1957?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15345767#comment-15345767
] 

ASF GitHub Bot commented on APEXMALHAR-1957:
--------------------------------------------

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

    https://github.com/apache/apex-malhar/pull/292#discussion_r68177086
  
    --- Diff: contrib/src/main/java/com/datatorrent/contrib/hbase/HBaseScanOperator.java ---
    @@ -79,4 +170,79 @@ public void emitTuples()
        */
       protected abstract T getTuple(Result result);
     
    +  /**
    +   * Returns the start row key in the table as set previously
    +   * @return {@link #startRow}
    +   */
    +  public String getStartRow()
    +  {
    +    return startRow;
    +  }
    +
    +  /**
    +   * Sets the start row key in the table from where the scan should begin
    +   * @param startRow
    +   */
    +  public void setStartRow(String startRow)
    +  {
    +    this.startRow = startRow;
    +  }
    +
    +  /**
    +   * Returns the end row key in the table as set previously
    +   * @return {@link #endRow}
    +   */
    +  public String getEndRow()
    +  {
    +    return endRow;
    +  }
    +
    +  /**
    +   * Sets the end row key in the table where the scan should end
    +   * @param endRow
    +   */
    +  public void setEndRow(String endRow)
    +  {
    +    this.endRow = endRow;
    +  }
    +
    +  /**
    +   * Returns the last read row key from the hbase table
    +   * @return {@link #lastReadRow}
    +   */
    +  public String getLastReadRow()
    +  {
    +    return lastReadRow;
    +  }
    +
    +  /**
    +   * Sets the last read row key from the hbase table. After the failures, the new scan
will start from this row key
    +   * @param lastReadRow
    +   */
    +  public void setLastReadRow(String lastReadRow)
    +  {
    +    this.lastReadRow = lastReadRow;
    +  }
    +
    +  /**
    +   * Returns the Scan HINT_LOOKAHEAD parameter as configured. Default is {@value #DEF_HINT_SCAN_LOOKAHEAD}
    --- End diff --
    
    It seems this is now deprecated and optimization will happen automatically. Will remove
this from the changes.


> Improve HBasePOJOInputOperator with support for threaded read
> -------------------------------------------------------------
>
>                 Key: APEXMALHAR-1957
>                 URL: https://issues.apache.org/jira/browse/APEXMALHAR-1957
>             Project: Apache Apex Malhar
>          Issue Type: Task
>            Reporter: Bhupesh Chawda
>            Assignee: Bhupesh Chawda
>
> Add the following support to Hbase POJO Input Operator:
> * Add support for threaded read
> * Allow to specify a set of "column family: column" and fetch data only for these columns
> * Allow to specify an end row key to stop scanning
> * Add metrics



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