Lars Volker has posted comments on this change. Change subject: IMPALA-2328: Address additional comments ......................................................................
Patch Set 4: (3 comments) Thanks for the review, please see PS5. http://gerrit.cloudera.org:8080/#/c/6147/4/be/src/exec/hdfs-parquet-scanner.cc File be/src/exec/hdfs-parquet-scanner.cc: Line 494: // Resolve the parquet column using schema_resolver_. This will perform either name > a short single line will suffice here (no need to say 'using schema_resolve Done Line 505: // during the scan, so any predicate would evaluate to false. Return early. > '<col> is null' would evaluate to true, did you cover that? Yes, comparisons with null literals are filtered in the Frontend. min/max are only set when there are non-null values, so we don't consider statistics for "is null". Line 512: // In case there is a bug, we return an error, which will abort the query. > sounds like this should also be a dcheck, no? We abort in L515. I implemented it like this to re-use the error string for the status. Is there an easier way? -- To view, visit http://gerrit.cloudera.org:8080/6147 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-MessageType: comment Gerrit-Change-Id: I54c205fad7afc4a0b0a7d0f654859de76db29a02 Gerrit-PatchSet: 4 Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-Owner: Lars Volker <[email protected]> Gerrit-Reviewer: Alex Behm <[email protected]> Gerrit-Reviewer: Lars Volker <[email protected]> Gerrit-Reviewer: Marcel Kornacker <[email protected]> Gerrit-Reviewer: Tim Armstrong <[email protected]> Gerrit-HasComments: Yes
