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haonan pushed a commit to branch IOTDB1344_12
in repository https://gitbox.apache.org/repos/asf/iotdb.git

commit ca16ba0b6e126de657cee91fbf7da618377fafb1
Author: HTHou <[email protected]>
AuthorDate: Thu Apr 29 15:16:41 2021 +0800

    [To rel/0.11][IOTDB-1344] Deleting Storage Group does not clear the count 
of time series
---
 .../org/apache/iotdb/db/metadata/MManager.java     |  6 ++-
 .../iotdb/db/metadata/MManagerBasicTest.java       | 54 ++++++++++++++++++++++
 2 files changed, 59 insertions(+), 1 deletion(-)

diff --git a/server/src/main/java/org/apache/iotdb/db/metadata/MManager.java 
b/server/src/main/java/org/apache/iotdb/db/metadata/MManager.java
index c6bcb78..f6bfb3c 100644
--- a/server/src/main/java/org/apache/iotdb/db/metadata/MManager.java
+++ b/server/src/main/java/org/apache/iotdb/db/metadata/MManager.java
@@ -621,7 +621,7 @@ public class MManager {
   public void deleteStorageGroups(List<PartialPath> storageGroups) throws 
MetadataException {
     try {
       for (PartialPath storageGroup : storageGroups) {
-        totalSeriesNumber.addAndGet(mtree.getAllTimeseriesCount(storageGroup));
+        
totalSeriesNumber.addAndGet(-mtree.getAllTimeseriesCount(storageGroup));
         // clear cached MNode
         if (!allowToCreateNewSeries
             && totalSeriesNumber.get() * ESTIMATED_SERIES_SIZE < 
MTREE_SIZE_THRESHOLD) {
@@ -1959,4 +1959,8 @@ public class MManager {
 
     boolean satisfy(String storageGroup);
   }
+
+  public long getTotalSeriesNumber() {
+    return totalSeriesNumber.get();
+  }
 }
diff --git 
a/server/src/test/java/org/apache/iotdb/db/metadata/MManagerBasicTest.java 
b/server/src/test/java/org/apache/iotdb/db/metadata/MManagerBasicTest.java
index 624f441..bd1c32b 100644
--- a/server/src/test/java/org/apache/iotdb/db/metadata/MManagerBasicTest.java
+++ b/server/src/test/java/org/apache/iotdb/db/metadata/MManagerBasicTest.java
@@ -736,4 +736,58 @@ public class MManagerBasicTest {
       fail(e.getMessage());
     }
   }
+
+  @Test
+  public void testTotalSeriesNumber() {
+    MManager manager = IoTDB.metaManager;
+
+    try {
+      manager.setStorageGroup(new PartialPath("root.laptop"));
+      manager.createTimeseries(
+          new PartialPath("root.laptop.d1"),
+          TSDataType.INT32,
+          TSEncoding.PLAIN,
+          CompressionType.GZIP,
+          null);
+      manager.createTimeseries(
+          new PartialPath("root.laptop.d1.s1"),
+          TSDataType.INT32,
+          TSEncoding.PLAIN,
+          CompressionType.GZIP,
+          null);
+      manager.createTimeseries(
+          new PartialPath("root.laptop.d1.s1.t1"),
+          TSDataType.INT32,
+          TSEncoding.PLAIN,
+          CompressionType.GZIP,
+          null);
+      manager.createTimeseries(
+          new PartialPath("root.laptop.d1.s2"),
+          TSDataType.INT32,
+          TSEncoding.PLAIN,
+          CompressionType.GZIP,
+          null);
+      manager.createTimeseries(
+          new PartialPath("root.laptop.d2.s1"),
+          TSDataType.INT32,
+          TSEncoding.PLAIN,
+          CompressionType.GZIP,
+          null);
+      manager.createTimeseries(
+          new PartialPath("root.laptop.d2.s2"),
+          TSDataType.INT32,
+          TSEncoding.PLAIN,
+          CompressionType.GZIP,
+          null);
+
+      assertEquals(6, manager.getTotalSeriesNumber());
+      manager.deleteTimeseries(new PartialPath("root.laptop.d2.s1"));
+      assertEquals(5, manager.getTotalSeriesNumber());
+      manager.deleteStorageGroups(Collections.singletonList(new 
PartialPath("root.laptop")));
+      assertEquals(0, manager.getTotalSeriesNumber());
+    } catch (MetadataException e) {
+      e.printStackTrace();
+      fail(e.getMessage());
+    }
+  }
 }

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