[infinispan-issues] [JBoss JIRA] Created: (ISPN-1383) Data caching multiplying memory requirements of Hot Rod server

[Galder Zamarreño (JIRA)]

Data caching multiplying memory requirements of Hot Rod server
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                 Key: ISPN-1383
                 URL: https://issues.jboss.org/browse/ISPN-1383
             Project: Infinispan
          Issue Type: Bug
          Components: Cache Server
    Affects Versions: 5.0.1.FINAL
            Reporter: Galder Zamarreño
            Assignee: Galder Zamarreño
             Fix For: 5.1.0.ALPHA2 , 5.1.0.FINAL


After inserting a 160MB object in Hot Rod, the memory consumption of the server goes through the roof. The screenshot shows a couple of interesting things:

1. Both the HotRodDecoder and the DataContainer have a byte[] of approx 160mb each. So, it seems like it's actually two copies of the same byte[]. It's clear though that only the cache container should have it, and any cache decoder data should be cleared when the request is completed.

2. Netty's UnsafeDynamicChannelBuffer is still holding to a byte[] of 268MB approx. Judging by the 2nd screenshot attached, this appears to be belonging to the underlying ReplayingDecoder. That should also, if possible, be cleared up. I'll have a look around in the Netty code and maybe ping Trustin.

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