dbwong commented on a change in pull request #482: PHOENIX-4925 Use a Variant
Segment tree to organize Guide Post Info
URL: https://github.com/apache/phoenix/pull/482#discussion_r297310324
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File path:
phoenix-core/src/main/java/org/apache/phoenix/schema/stats/GuidePostsInfo.java
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@@ -17,138 +17,913 @@
*/
package org.apache.phoenix.schema.stats;
-import java.util.Collections;
import java.util.List;
+import java.util.LinkedList;
+import java.util.Collections;
+import java.util.Iterator;
+import java.util.Set;
-import org.apache.hadoop.hbase.io.ImmutableBytesWritable;
+import com.google.common.annotations.VisibleForTesting;
+import com.google.common.base.Preconditions;
+import com.google.common.collect.Lists;
+import com.google.common.collect.Sets;
import org.apache.hadoop.hbase.util.Bytes;
-import org.apache.phoenix.util.ByteUtil;
-import org.apache.phoenix.util.SizedUtil;
+import org.apache.hadoop.hbase.util.Pair;
+import org.apache.phoenix.schema.SortOrder;
+import org.apache.phoenix.util.ScanUtil;
+import org.apache.phoenix.util.ScanUtil.BytesComparator;
+import org.apache.phoenix.query.KeyRange;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+@VisibleForTesting
+final class DecodedGuidePostChunk {
+ /**
+ * The index of the guide post chunk in the chunk array.
+ */
+ private final int guidePostChunkIndex;
+
+ /**
+ * The key range of the guide posts in this chunk
+ */
+ private KeyRange keyRange;
+
+ /**
+ * The guide posts in this chunk.
+ */
+ private final List<byte[]> guidePosts;
+
+ public DecodedGuidePostChunk(int guidePostChunkIndex, KeyRange keyRange,
List<byte[]> guidePosts) {
+ Preconditions.checkArgument(guidePostChunkIndex !=
GuidePostChunk.INVALID_GUIDEPOST_CHUNK_INDEX);
+ Preconditions.checkArgument(guidePosts.size() > 0);
+
+ this.guidePostChunkIndex = guidePostChunkIndex;
+ this.keyRange = keyRange;
+ this.guidePosts = guidePosts;
+ }
+
+ public int getGuidePostChunkIndex() {
+ return guidePostChunkIndex;
+ }
+
+ public List<byte[]> getGuidePosts() {
+ return guidePosts;
+ }
+
+ @Override
+ public boolean equals(Object o) {
Review comment:
In java typically if you need a custom equals you need a custom hashcode
function.
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