Hi,
There are two aspects when dealing with large tables.
1. Projection
The table mapping/definition is necessary as it indicates what information is needed - a small mapping excludes a lot of
unnecessary data.
2. Push Down filtering
Unfortunately there hasn't been much happening on this front since the functionality is fairly restricted and not really
pluggable especially when
dealing with non-HDFS resources. The ORC support has improved things a bit
however it's still early days...
Cheers,
On 12/4/14 7:41 AM, James Andrew-Smith wrote:
Has there been any progress on the "Push Down Filtering" mentioned by Costin?
(http://ryrobes.com/systems/connecting-tableau-to-elasticsearch-read-how-to-query-elasticsearch-with-hive-sql-and-hadoop/#comment-1169375542)
Right now I am working around this by creating a lot of specific table mappings
to maintain performance.
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