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From GitBox <...@apache.org>
Subject [GitHub] [phoenix] BinShi-SecularBird commented on a change in pull request #463: Phoenix stats Initial Commit
Date Fri, 15 Mar 2019 02:20:05 GMT
BinShi-SecularBird commented on a change in pull request #463: Phoenix stats Initial Commit
URL: https://github.com/apache/phoenix/pull/463#discussion_r265824643
 
 

 ##########
 File path: phoenix-core/src/main/java/org/apache/phoenix/compile/ScanRanges.java
 ##########
 @@ -694,4 +694,138 @@ public TimeRange getRowTimestampRange() {
         return rowTimestampRange;
     }
 
+    public List<KeyRange> getRowKeyRanges(){
+
+        //If its scanRanges are everything or nothing we short circuit and leave
+        //As schema is not filled in
+        if (this.equals(ScanRanges.EVERYTHING)) {
+            return Lists.newArrayList(KeyRange.EVERYTHING_RANGE);
+        }
+        if (this.equals(ScanRanges.NOTHING)) {
+            return Lists.newArrayList(KeyRange.EMPTY_RANGE);
+        }
+
+        List<KeyRange> queryRowKeyRanges = Lists.newArrayListWithExpectedSize(this.ranges.size());
+
+        //Point lookups are stored in the first range as a whole and already a rowkey
+        // see ScanRanges.getPointLookupKeyIterator
+        if (this.isPointLookup()) {
+            queryRowKeyRanges.addAll(this.getRanges().get(0));
+        } else {
+
+            //If scanRanges.ranges has no information then should be  in the scanRanges.scanRange
+            if (this.getRanges().size() == 0) {
+                queryRowKeyRanges.add(this.getScanRange());
+            } else { //We have a composite key need the row key from the combination
+
+                //Many simple cases where there is not multiple ranges the calculated scan
ranges
 
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