attempt to unlock lock, not locked by current thread by node id: 83394267-6fff-450c-8cee-2690f845ec4

最新推荐文章于 2024-07-01 08:15:00 发布

mameng1998

最新推荐文章于 2024-07-01 08:15:00 发布

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分类专栏： java 文章标签：数据库 java redis

本文链接：https://blog.youkuaiyun.com/mameng1988/article/details/130291581

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文章描述了一段在Java中使用Redisson实现分布式锁时遇到的问题，即尝试解锁未被当前线程锁定的锁。原始代码在尝试获取锁时使用了`tryLock`方法，而在释放锁时可能存在误操作。修复后的代码改用`lock`方法并确保在finally块中正确解锁，同时锁的键值加入了更多的唯一标识以避免冲突。

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使用redis的分布式锁出现了下面的错误：

attempt to unlock lock, not locked by current thread by node id: 83394267-6fff-450c-8cee-2690f845ec4f thread-id: 89

有问题的代码：

//从redis查不到，则走mysql
String key = getLiveFaceResourceStLockKey(region);
RLock rLock = redissonRedisService.getLock(key);
try {
      log.info("live_face_resource_st_from_mysql_get_lock");
      boolean bool = rLock.tryLock(RedisKey.EXPIRE_TEN_SECONDS, TimeUnit.SECONDS);
                
      if (bool) {
                       
         List<LiveFaceResourceSt> stList = liveFaceResourceStService.selectListOnline(region, platform);
                        resourcesResponseList.addAll(ListUtils.emptyIfNull(stList).stream()
                                .filter(Objects::nonNull)
                                .map(this::convert)
                                .collect(Collectors.toList()));
      if (CollectionUtils.isNotEmpty(resourcesResponseList)) {
                            micoRedisService.string().set(getLiveFaceResourceStKey(region), JSON.toJSONString(resourcesResponseList));
                            micoRedisService.expire(getLiveFaceResourceStKey(region), RedisKey.EXPIRE_FIVE_MINUTE, TimeUnit.SECONDS);
                        }
                        
                    }
   } catch (Exception e) {
                    log.error("live_face_resource_st_from_mysql_lock_fail:", e);
   } finally {
        if (rLock.isLocked()) {
                try {
                    rLock.unlock();
                } catch (Exception e) {
                    log.error("live_face_resource_st解锁异常:", e);
                }
         }
   }

修复后的代码：

//从redis查不到，则走mysql
String key = getLiveFaceResourceStLockKey(region, platform);
RLock lock = redissonRedisService.getLock(key);
lock.lock(10, TimeUnit.SECONDS);
try {
       List<LiveFaceResourceSt> stList = liveFaceResourceStService.selectListOnline(region, platform);
                    resourcesResponseList.addAll(ListUtils.emptyIfNull(stList).stream()
                            .filter(Objects::nonNull)
                            .map(this::convert)
                            .collect(Collectors.toList()));

       if (CollectionUtils.isNotEmpty(resourcesResponseList)) {
                        micoRedisService.string().set(getLiveFaceResourceStKey(region, platform), JSON.toJSONString(resourcesResponseList));
micoRedisService.expire(getLiveFaceResourceStKey(region, platform), RedisKey.EXPIRE_FIVE_MINUTE, TimeUnit.SECONDS);
         }
 } catch (Exception e) {
                    log.error("live_face_resource_st_from_mysql_lock_fail:", e);
} finally {
       if (lock.isLocked()) {
           lock.unlock();
       }
}