default boolean postScannerFilterRow(ObserverContext<? extends RegionCoprocessorEnvironment> c,
    InternalScanner s, Cell curRowCell, boolean hasMore) throws IOException {
    return hasMore;
  }
This will be called by the scan flow when the current scanned row is being filtered out by the
filter. The filter may be filtering out the row via any of the below scenarios
<ol>
<li><code>boolean filterRowKey(byte [] buffer, int offset, int length)</code> returning
true</li>
<li><code>boolean filterRow()</code> returning true</li>
<li><code>default void filterRow(List&lt;KeyValue&gt; kvs)</code> removing all the kvs from the
passed List</li>
</ol>
<p>
Note: Do not retain references to any Cells returned by scanner, beyond the life of this
invocation. If need a Cell reference for later use, copy the cell and use that.
@param c          the environment provided by the region server
@param s          the scanner
@param curRowCell The cell in the current row which got filtered out
@param hasMore    the 'has more' indication
@return whether more rows are available for the scanner or not
hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/RegionObserver.java