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  1. Accumulo
  2. ACCUMULO-4716

Do not attempt to cache blocks over max array size

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      One might think you could do new byte[Integer.MAX_VALUE] in Java, but as I found when looking into ACCUMULO-4708 suprise you can't.

      According to the stack overflow post new byte[Integer.MAX_VALUE - 8] should be safe. I was able to do up to new byte[Integer.MAX_VALUE - 2] in my local testing.

      When Accumulo caches a block it reads it into a byte array. For example this code in CachableBlockFile.java does this when _currBlock.getRawSize() <= cache.getMaxSize().

      This code should ensure the size is less than min( cache.getMaxSize(), MAX_ARRAY_SIZE) inorder to read it into a byte array.

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              • Assignee:
                jmark99 Mark Owens
                Reporter:
                kturner Keith Turner
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