{"push_id":976223169,"size":1,"distinct_size":1,"ref":"refs/heads/cdh5-trunk","head":"2d9d57dcbdffc866941f348d06d10d4bde36ba7b","before":"c3543b9b1257bfc6e2ddd05e9f360a6f03d89a4b","commits":[{"sha":"2d9d57dcbdffc866941f348d06d10d4bde36ba7b","author":{"email":"3eca10f30041813f045165784e24b5a950a6cc7e@cloudera.com","name":"Henry Robinson"},"message":"IMPALA-2464: Disable per-row filters based on selectivity\n\nThis patch adds a simple heuristic to the Parquet scanner to disable a\nfilter if it's not being selective. If the fraction of rows rejected by\nthe filter drops below 10%, the filter is disabled. This is tested every\n16K rows.\n\nThe ratio of rows rejected to total rows considered is controlled by\nFLAGS_parquet_min_filter_reject_ratio.\n\nChange-Id: Ic5d98c97061ccda7f0d4448f312b5a1618d81e56\nReviewed-on: http://gerrit.cloudera.org:8080/2116\nReviewed-by: Henry Robinson <henry@cloudera.com>\nTested-by: Henry Robinson <henry@cloudera.com>","distinct":true,"url":"https://api.github.com/repos/cloudera/Impala/commits/2d9d57dcbdffc866941f348d06d10d4bde36ba7b"}]}