Github user kumarvishal09 commented on a diff in the pull request:
https://github.com/apache/carbondata/pull/2379#discussion_r196456536
--- Diff:
core/src/main/java/org/apache/carbondata/core/datastore/page/statistics/LVLongStringStatsCollector.java
---
@@ -0,0 +1,50 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.carbondata.core.datastore.page.statistics;
+
+/**
+ * This class is for the columns with varchar data type,
+ * a string type which can hold more than 32000 characters
+ */
+public class LVLongStringStatsCollector extends LVStringStatsCollector {
+
+ public static LVLongStringStatsCollector newInstance() {
+ return new LVLongStringStatsCollector();
+ }
+
+ private LVLongStringStatsCollector() {
+
+ }
+
+ @Override
+ protected byte[] getActualValue(byte[] value) {
+ byte[] actualValue;
+ assert (value.length >= 4);
+ if (value.length == 4) {
+ assert (value[0] == 0 && value[1] == 0);
+ actualValue = new byte[0];
+ } else {
+ // todo: what does this mean?
+ // int length = (value[0] << 8) + (value[1] & 0xff);
--- End diff --
Here first four bytes you have to consider to get the length of the data,
please refer code in ShortLength collector
---
