shuwenwei commented on code in PR #12656:
URL: https://github.com/apache/iotdb/pull/12656#discussion_r1626847297
##########
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/protocol/client/ConfigNodeClient.java:
##########
@@ -1116,4 +1129,37 @@ public boolean validateObject(
.orElse(false);
}
}
+
+ private class Cursor {
+ private int value;
+ private boolean locked = false;
+
+ public Cursor(int value) {
+ this.value = value;
+ }
+
+ public int get() {
+ return value;
+ }
+
+ public void set(int value) {
+ if (!locked) {
+ this.value = value;
+ } else {
+ logger.warn(
+ "ConfigNodeClient cursor will keep {} and won't change to {},
because it has been locked.",
+ configNodeEndPoints.get(this.value),
+ configNodeEndPoints.get(value));
+ }
+ }
+
+ public void setAndLock(int value) {
+ set(value);
+ locked = true;
+ }
+
+ public void unlock() {
+ locked = false;
+ }
Review Comment:
Is it necessary to change the value back when unlocking?
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