caches - rank, sorter, aggregator,lookup,joiner

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Post on 26-Dec-2015

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CACHES:HIgh memory consumption Transformations uses the cache, they are1. Rank CacheTHe IS will load the data into Rank Cache before it performs the Rank Calculation.2. Aggregator Cache - Index cache(groupby port values) & Data Cache(Non groupby port values)3. Joiner Cache - Joiner cache - master source ports( index cache) - Data cache4. Sorter Cache - Integration service uses cache memory before performing sort operation. It uses bubble sort operation to perform sort operation.5. Look Up Cache - static lookup cache - default cache is created, this cannot be updated Dynamic lookup cache = This cache can be updated during the session run, when you are performing a lookup on target table. Persistence lookup cache - This cache can be reused for multiple session runs. (Performance of session is improved)Shared lookup cache - lookup can be shared within mapping across multiple lookup t/f's. (Performance of Mapping is improved)