Method updateBaseTime

src/core/IncomingDataPoints.java:245–260

Updates the base time in the row key. @param timestamp The timestamp from which to derive the new base time. @return The updated base time.

(final long timestamp)

   * @return The updated base time.
   */
  private long updateBaseTime(final long timestamp) {
    // We force the starting timestamp to be on a MAX_TIMESPAN boundary
    // so that all TSDs create rows with the same base time. Otherwise
    // we'd need to coordinate TSDs to avoid creating rows that cover
    // overlapping time periods.
    final long base_time = timestamp - (timestamp % Const.MAX_TIMESPAN);
    // Clone the row key since we're going to change it. We must clone it
    // because the HBase client may still hold a reference to it in its
    // internal datastructures.
    row = Arrays.copyOf(row, row.length);
    Bytes.setInt(row, (int) base_time, Const.SALT_WIDTH() + tsdb.metrics.width());
    RowKey.prefixKeyWithSalt(row); // in case the timestamp will be involved in
                                   // salting later
    tsdb.scheduleForCompaction(row, (int) base_time);
    return base_time;
  }

  /**
   * Implements {@link #addPoint} by storing a value with a specific flag.