Created on 12-02-2017 03:21 AM
This article is a short summary of LLAP-specific causes of query slowness. Given that a lot of the Hive query execution (compilation, almost all operator logic) stay the same when LLAP is used, queries can be slow for non-LLAP-related reasons; general Hive query performance issues (e.g. bad plan, skew, poor partitioning, slow fs, ...) should also be considered when investigating. These issues are outside of the scope of this article.
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