TryLock CancellationException issue

[yinyansheng]

hello,

i met a problem, i have about 200 instances try get a distribute lock by use redisson client,
and one instances will occur CancellationException after running a period time, and can not recover.

version: 3.17.6
server: aws elasticahe redis cluster

java.util.concurrent.CancellationException
at java.base/java.util.concurrent.CompletableFuture.cancel(CompletableFuture.java:2468)
at org.redisson.RedissonLock.tryLock(RedissonLock.java:235)

code as below:
`

   RLock lock;
    try {
        lock = redissonService.getRedissonClient().getLock(LEASE_COORDINATOR_LOCK_KEY);

        if (!lock.tryLock(3_000, 60_000, TimeUnit.MILLISECONDS)) {
            //log something
            return;
        }

        //do something....

    } catch (InterruptedException e) {
        //log something
    } catch (Exception e) {
        //log something
    } finally {
        //here ignore unlock to ensure execute only once in specific period time
        //lock.unlock();
    }`

[Barrios596]

Hello,

I'm having the same issue that @yinyansheng reported after upgrading from Redisson client 3.16.1 to version 3.17.6

java.util.concurrent.CancellationException
	at java.base/java.util.concurrent.CompletableFuture.cancel(CompletableFuture.java:2396)
	at org.redisson.RedissonLock.tryLock(RedissonLock.java:235)

The issue is happening with a sample code similar to the one posted by @yinyansheng, when calling the tryLock() method.

Redisson version

3.17.6

Seems to be similar to this issue #4216

[mrniko]

Fixed! Thanks for report

[andreas-ajaib]

@mrniko which version can I use to fix this problem? Also, is it safe to upgrade from version 3.15.x or 3.17.x?

[mrniko]

3.18.1