[iotdb] branch master updated: Downgrade readlock to writelock in delete (#2774)

[jackietien]

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


The following commit(s) were added to refs/heads/master by this push:
     new 76b6d82  Downgrade readlock to writelock in delete (#2774)
76b6d82 is described below

commit 76b6d8206840e427e3904649d254e6c1b6aafcf7
Author: zhanglingzhe0820 <445073...@qq.com>
AuthorDate: Fri Mar 5 16:01:07 2021 +0800

    Downgrade readlock to writelock in delete (#2774)
    
    Downgrade readlock to writelock in delete
---
 .../apache/iotdb/db/engine/storagegroup/StorageGroupProcessor.java    | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git 
a/server/src/main/java/org/apache/iotdb/db/engine/storagegroup/StorageGroupProcessor.java
 
b/server/src/main/java/org/apache/iotdb/db/engine/storagegroup/StorageGroupProcessor.java
index 228a328..b5b76df 100755
--- 
a/server/src/main/java/org/apache/iotdb/db/engine/storagegroup/StorageGroupProcessor.java
+++ 
b/server/src/main/java/org/apache/iotdb/db/engine/storagegroup/StorageGroupProcessor.java
@@ -1676,7 +1676,7 @@ public class StorageGroupProcessor {
     // TODO: how to avoid partial deletion?
     // FIXME: notice that if we may remove a SGProcessor out of memory, we 
need to close all opened
     // mod files in mergingModification, sequenceFileList, and 
unsequenceFileList
-    tsFileManagement.writeLock();
+    tsFileManagement.readLock();
     writeLock();
 
     // record files which are updated so that we can roll back them in case of 
exception
@@ -1719,7 +1719,7 @@ public class StorageGroupProcessor {
       throw new IOException(e);
     } finally {
       writeUnlock();
-      tsFileManagement.writeUnlock();
+      tsFileManagement.readUnLock();
     }
   }