asfimport

[Viktor Szathmáry](https://issues.apache.org/jira/browse/PARQUET-98?#comment-14352121) / @phraktle: Tested with 1.6.0rc6, the problem still exists: filter2 API is more than 2x slower...

[Alex Levenson](https://issues.apache.org/jira/browse/PARQUET-98?#comment-14352561) / @isnotinvain: I don't think anything has changed yet that would effect this, so no surprises there. I've not had a chance to look into the performance difference...

[Viktor Szathmáry](https://issues.apache.org/jira/browse/PARQUET-98?#comment-14352715) / @phraktle: While I'm not familiar with the internals of the implementation, the main difference seems to be that with filter2, all columns are deserialized for all rows....

[Alex Levenson](https://issues.apache.org/jira/browse/PARQUET-98?#comment-14353436) / @isnotinvain: Yes, I think that is the main difference. However, I'm a bit surprised it has much performance impact – for parquet to skip a value, it...

[Ryan Blue](https://issues.apache.org/jira/browse/PARQUET-98?#comment-14353457) / @rdblue: > for parquet to skip a value, it essentially has to deserialize it Maybe the problem is a defensive copy? Converting a byte array to a...

[Viktor Szathmáry](https://issues.apache.org/jira/browse/PARQUET-98?#comment-14353562) / @phraktle: Not knowing much about the implementation, this is just conjecture – but based on the performance results and the extra amount of garbage during profiling, it...

[Alex Levenson](https://issues.apache.org/jira/browse/PARQUET-98?#comment-14353615) / @isnotinvain: @phraktle well that's my point, even though you don't need to read A and B, you've got to skip their current values so you can move...

[Viktor Szathmáry](https://issues.apache.org/jira/browse/PARQUET-98?#comment-14353624) / @phraktle: Not sure how the "classic" filter implementation gets by, but it seems to be doing a much better job (2-3x faster).

[Viktor Szathmáry](https://issues.apache.org/jira/browse/PARQUET-98?#comment-14537083) / @phraktle: Tested with 1.6.0 release, still has this issue.

[Ryan Blue](https://issues.apache.org/jira/browse/PARQUET-98?#comment-14551393) / @rdblue: @phraktle, to save you some time, the 1.7.0 release will also have this problem. I'll find some time to look into it further.