Github user joemeszaros commented on the pull request:
https://github.com/apache/nifi/pull/92#issuecomment-142863157
Yes, you are correct.
The PutDisributeMapCache processor relies on the existing
DistributedMapCacheServer, which internally use
org.apache.nifi.distributed.cache.server.map.SimpleMapCache class. If you are
intrested in the implementation details, please take a look at this class. It
stores cache entries in a HashMap<ByteBuffer, MapCacheRecord>.
You can control the size of the cache with two factors:
- The max cache size option in the cache server, which controls the maximum
number of cache entries that the cache can hold (default value is 10000)
- The max cache entry size in the PutDistributedMapCache processor,
controlling the maximum amount of data to put into cache (default value is 1 MB)
Hope it clears your question.
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