[iotdb] branch research/M4-visualization updated: update readme

[leirui]

This is an automated email from the ASF dual-hosted git repository.

leirui pushed a commit to branch research/M4-visualization
in repository https://gitbox.apache.org/repos/asf/iotdb.git


The following commit(s) were added to refs/heads/research/M4-visualization by 
this push:
     new d3983524f24 update readme
d3983524f24 is described below

commit d3983524f24ca79e94ec24fa4eea8bb5afa9bd35
Author: Lei Rui <1010953...@qq.com>
AuthorDate: Thu Jul 20 00:59:19 2023 +0800

    update readme
---
 .../iotdb/db/query/dataset/groupby/LocalGroupByExecutor4CPV.java    | 1 -
 .../apache/iotdb/tsfile/file/metadata/statistics/ValueIndex.java    | 6 ++----
 2 files changed, 2 insertions(+), 5 deletions(-)

diff --git 
a/server/src/main/java/org/apache/iotdb/db/query/dataset/groupby/LocalGroupByExecutor4CPV.java
 
b/server/src/main/java/org/apache/iotdb/db/query/dataset/groupby/LocalGroupByExecutor4CPV.java
index 031d08c33ab..23fcd8420e9 100644
--- 
a/server/src/main/java/org/apache/iotdb/db/query/dataset/groupby/LocalGroupByExecutor4CPV.java
+++ 
b/server/src/main/java/org/apache/iotdb/db/query/dataset/groupby/LocalGroupByExecutor4CPV.java
@@ -63,7 +63,6 @@ public class LocalGroupByExecutor4CPV implements 
GroupByExecutor {
 
   // Aggregate result buffer of this path
   private final List<AggregateResult> results = new ArrayList<>();
-  //  private final TimeRange timeRange;
 
   private List<ChunkSuit4CPV> currentChunkList;
   private final List<ChunkSuit4CPV> futureChunkList = new ArrayList<>();
diff --git 
a/tsfile/src/main/java/org/apache/iotdb/tsfile/file/metadata/statistics/ValueIndex.java
 
b/tsfile/src/main/java/org/apache/iotdb/tsfile/file/metadata/statistics/ValueIndex.java
index 9a4a8b43f9f..405afa5e072 100644
--- 
a/tsfile/src/main/java/org/apache/iotdb/tsfile/file/metadata/statistics/ValueIndex.java
+++ 
b/tsfile/src/main/java/org/apache/iotdb/tsfile/file/metadata/statistics/ValueIndex.java
@@ -18,10 +18,8 @@ public class ValueIndex {
   int errorParam = TSFileDescriptor.getInstance().getConfig().getErrorParam();
   private DoubleArrayList values = new DoubleArrayList();
   public SDTEncoder sdtEncoder = new SDTEncoder();
-  public double errorBound = 0; // =std*2 =2*std.compDeviation
-  //  public IntDeltaEncoder idxEncoder = new IntDeltaEncoder();
+  public double errorBound = 0;
   public PlainEncoder idxEncoder = new PlainEncoder(TSDataType.INT32, 0);
-  //  public DoublePrecisionEncoderV2 valueEncoder = new 
DoublePrecisionEncoderV2();
   public PlainEncoder valueEncoder = new PlainEncoder(TSDataType.DOUBLE, 0);
   public PublicBAOS idxOut = new PublicBAOS();
   public PublicBAOS valueOut = new PublicBAOS();
@@ -78,7 +76,7 @@ public class ValueIndex {
   private void initForLearn() {
     this.stdDev = getStdDev();
     this.errorBound = 2 * stdDev * errorParam;
-    this.sdtEncoder.setCompDeviation(errorBound / 2.0); // equals stdDev
+    this.sdtEncoder.setCompDeviation(errorBound / 2.0); // stdDev
   }
 
   public void learn() {