serverPools := z.getServerPoolsAvailableSpace(ctx)
        total := serverPools.TotalAvailable()
        // choose when we reach this many
        choose := rand.Uint64() % total
        atTotal := uint64(0)
        for _, pool := range serverPools {
                atTotal += pool.Available
                if atTotal > choose && pool.Available > 0 {
                        return pool.Index
                }

		t.Errorf("no error should happen, but got %v", err)
	}

	if name != "groupby" || total != 60 {
		t.Errorf("name should be groupby, but got %v, total should be 60, but got %v", name, total)
	}

	if err := DB.Model(&User{}).Select("name, sum(age) as total").Where("name LIKE ?", "groupby%").Group("name").Having("name = ?", "groupby1").Row().Scan(&name, &total); err != nil {

        return 1;
    }

    /**
     * Gets the total number of records.
     *
     * @return The total record count.
     */
    public int getAllRecordCount() {
        return allRecordCount;
    }

    /**
     * Sets the total number of records.
     *
     * @param allRecordCount The total record count.
     */
    public void setAllRecordCount(final int allRecordCount) {

        versionNo = null;

    }

    /**
     * Gets the total number of records across all pages.
     *
     * @return total record count
     */
    public int getAllRecordCount() {
        return allRecordCount;
    }

    /**
     * Sets the total number of records across all pages.
     *
     * @param allRecordCount total record count
     */

        return 1;
    }

    /**
     * Returns the total number of records.
     *
     * @return The total number of records.
     */
    public int getAllRecordCount() {
        return allRecordCount;
    }

    /**
     * Sets the total number of records.
     *
     * @param allRecordCount The total number of records.
     */

    }

    /**
     * Returns the total number of records.
     *
     * @return The total number of records.
     */
    public int getAllRecordCount() {
        return allRecordCount;
    }

    /**
     * Sets the total number of records.
     *
     * @param allRecordCount The total number of records.
     */

        return DEFAULT_CURRENT_PAGE_NUMBER;
    }

    /**
     * Gets the total number of records.
     * @return The total number of records.
     */
    public int getAllRecordCount() {
        return allRecordCount;
    }

    /**
     * Sets the total number of records.
     * @param allRecordCount The total number of records.
     */
    public void setAllRecordCount(final int allRecordCount) {

        contentSize = 0;
        processingTime = 0;
    }

    /**
     * Gets the total content size of all documents in this list.
     *
     * @return the total content size in bytes
     */
    public long getContentSize() {
        return contentSize;
    }

    /**
     * Adds to the total content size of this document list.
     *
     * @param contentSize the content size to add in bytes
     */

        return DEFAULT_CURRENT_PAGE_NUMBER;
    }

    /**
     * Gets the total number of records.
     *
     * @return The total record count
     */
    public int getAllRecordCount() {
        return allRecordCount;
    }

    /**
     * Sets the total number of records.
     *
     * @param allRecordCount The total record count
     */
    public void setAllRecordCount(final int allRecordCount) {

type AccElem struct {
	Total int64
	Size  int64
	N     int64
}

// Add a duration to a single element.
func (a *AccElem) add(dur time.Duration) {
	if dur < 0 {
		dur = 0
	}
	a.Total += int64(dur)
	a.N++
}

// Merge b into a.
func (a *AccElem) merge(b AccElem) {
	a.N += b.N
	a.Total += b.Total
	a.Size += b.Size
}

// Avg returns average time spent.