[ratis] branch master updated: RATIS-1369. When there is no snapshot, the return snapshotIndex should be -1, not 0. (#473)

[szetszwo]

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


The following commit(s) were added to refs/heads/master by this push:
     new 00f0c85  RATIS-1369. When there is no snapshot, the return 
snapshotIndex should be -1, not 0. (#473)
00f0c85 is described below

commit 00f0c8586cbf70e292ece73768db93f3b7888885
Author: Glen Geng <gleng...@apache.org>
AuthorDate: Mon Apr 26 17:19:05 2021 +0800

    RATIS-1369. When there is no snapshot, the return snapshotIndex should be 
-1, not 0. (#473)
---
 .../src/main/java/org/apache/ratis/server/impl/ServerState.java       | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git 
a/ratis-server/src/main/java/org/apache/ratis/server/impl/ServerState.java 
b/ratis-server/src/main/java/org/apache/ratis/server/impl/ServerState.java
index 728f7e9..322feb5 100644
--- a/ratis-server/src/main/java/org/apache/ratis/server/impl/ServerState.java
+++ b/ratis-server/src/main/java/org/apache/ratis/server/impl/ServerState.java
@@ -431,7 +431,7 @@ class ServerState implements Closeable {
 
   long getLatestInstalledSnapshotIndex() {
     final TermIndex ti = latestInstalledSnapshot.get();
-    return ti != null? ti.getIndex(): 0L;
+    return ti != null? ti.getIndex(): RaftLog.INVALID_LOG_INDEX;
   }
 
   /**
@@ -440,7 +440,7 @@ class ServerState implements Closeable {
    */
   long getSnapshotIndex() {
     final SnapshotInfo s = getLatestSnapshot();
-    final long latestSnapshotIndex = s != null ? s.getIndex() : 0;
+    final long latestSnapshotIndex = s != null ? s.getIndex() : 
RaftLog.INVALID_LOG_INDEX;
     return Math.max(latestSnapshotIndex, getLatestInstalledSnapshotIndex());
   }