public boolean withinOrAfterTimeRange(long timestamp) {
    assert timestamp >= 0;
    if (allTime) {
      return true;
    }
    // check if >= minStamp
    return timestamp >= minStamp;
  }
Check if the specified timestamp is within or after this TimeRange.
<p>
Returns true if greater than minStamp, false if not.
@param timestamp timestamp to check
@return true if within or after TimeRange, false if not
hbase-common/src/main/java/org/apache/hadoop/hbase/io/TimeRange.java