unlocking of nested readLock deletes writeLock. #891

redisson/src/main/java/org/redisson/RedissonReadLock.java

@@ -117,6 +117,10 @@ public class RedissonReadLock extends RedissonLock implements RLock {
                         "redis.call('pexpire', KEYS[1], maxRemainTime); " +
                         "return 0; " +
                     "end;" + 
+                        
+                    "if mode == 'write' then " + 
+                        "return 0;" + 
+                    "end; " +
                 "end; " +
                     
                 "redis.call('del', KEYS[1]); " +

redisson/src/test/java/org/redisson/RedissonReadWriteLockTest.java

@@ -95,6 +95,22 @@ public class RedissonReadWriteLockTest extends BaseConcurrentTest {
         Assert.assertTrue(writeLock.tryLock());
     }
     
+    @Test
+    public void testWR() throws InterruptedException {
+        RReadWriteLock rw = redisson.getReadWriteLock("my_read_write_lock");
+        RLock writeLock = rw.writeLock();
+        writeLock.lock();
+        
+        rw.readLock().lock();
+        assertThat(writeLock.isLocked()).isTrue();
+        rw.readLock().unlock();
+        
+        assertThat(writeLock.isLocked()).isTrue();
+        writeLock.unlock();
+        assertThat(writeLock.isLocked()).isFalse();
+    }
+
+    
     @Test
     public void testWriteReadReentrancy() throws InterruptedException {
         RReadWriteLock readWriteLock = redisson.getReadWriteLock("TEST");