HACK! Revert "HBASE-17678 FilterList with MUST_PASS_ONE lead to redun…

…dancy cells returned - addendum"

This commit caused an issue upstream which led to a failing pig smoke test.
Family filters with OR does not work. HBASE-18410
Ref: CDH-56405

This reverts commit 347bef8.

hbase-client/src/main/java/org/apache/hadoop/hbase/filter/FilterList.java

@@ -27,7 +27,6 @@
 import org.apache.hadoop.hbase.Cell;
 import org.apache.hadoop.hbase.CellComparator;
 import org.apache.hadoop.hbase.CellUtil;
-import org.apache.hadoop.hbase.KeyValueUtil;
 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.exceptions.DeserializationException;
 import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;
@@ -145,7 +144,7 @@ public FilterList(final Operator operator, final Filter... rowFilters) {
 
   public void initPrevListForMustPassOne(int size) {
     if (operator == Operator.MUST_PASS_ONE) {
-      if (this.prevFilterRCList == null) {
+      if (this.prevCellList == null) {
         prevFilterRCList = new ArrayList<>(Collections.nCopies(size, null));
       }
       if (this.prevCellList == null) {
@@ -404,14 +403,7 @@ public ReturnCode filterKeyValue(Cell c) throws IOException {
         ReturnCode localRC = filter.filterKeyValue(c);
         // Update previous cell and return code we encountered.
         prevFilterRCList.set(i, localRC);
-        if (c == null || localRC == ReturnCode.INCLUDE || localRC == ReturnCode.SKIP) {
-          // If previous return code is INCLUDE or SKIP, we should always pass the next cell to the
-          // corresponding sub-filter(need not test shouldPassCurrentCellToFilter() method), So we
-          // need not save current cell to prevCellList for saving heap memory.
-          prevCellList.set(i, null);
-        } else {
-          prevCellList.set(i, KeyValueUtil.toNewKeyCell(c));
-        }
+        prevCellList.set(i, c);
 
         if (localRC != ReturnCode.SEEK_NEXT_USING_HINT) {
           seenNonHintReturnCode = true;