[infinispan-issues] [JBoss JIRA] (ISPN-10073) Nested async operations with HotRod client hang

[Dejan Bosanac (Jira)]

Dejan Bosanac created ISPN-10073:
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             Summary: Nested async operations with HotRod client hang
                 Key: ISPN-10073
                 URL: https://issues.jboss.org/browse/ISPN-10073
             Project: Infinispan
          Issue Type: Bug
          Components: Hot Rod
    Affects Versions: 9.4.10.Final
            Reporter: Dejan Bosanac


We noticed some issued with the HotRod client, when trying to use nested async calls. Originally, this was discovered in the context of Vert.x tests, but below you can find the smallest reproducer code that I could create (without any Vert.x dependencies).

{{        //DefaultCacheManager cm = new DefaultCacheManager();
        //Cache<String, String> cache =  cm.createCache("default",  new ConfigurationBuilder().build());

        RemoteCacheManager cm = new RemoteCacheManager();
        RemoteCache<String, String> cache = manager.getCache("default");

        final CompletableFuture put = new CompletableFuture();
        cache.putIfAbsentAsync("A", "A").thenAccept(resultA -> {
            final CompletableFuture nested = new CompletableFuture();
            cache.putIfAbsentAsync("B", "B").thenAccept(resultB -> {
                nested.complete("B");
            });
            try {
                nested.get();
            } catch (Exception e) {
                e.printStackTrace();
            }
            put.complete("B");
        });

        put.get();}}

Everything works as expected with embedded cache.




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