Internal Jenkins has submitted this change and it was merged. Change subject: IMPALA-3943: Do not throw scan errors for empty Parquet files. ......................................................................
IMPALA-3943: Do not throw scan errors for empty Parquet files. For Parquet files with no row groups but with num_rows=0 in the file footer the Parquet scanner returns an error indicating that the file is invalid. This behavior is a regression from previous Impala versions which used to accept such files. This patch restores the previous behavior and adds tests. Change-Id: I50ac3df6ff24bc5c384ef22e0f804a5132adb62e Reviewed-on: http://gerrit.cloudera.org:8080/4693 Reviewed-by: Alex Behm <alex.b...@cloudera.com> Tested-by: Internal Jenkins --- M be/src/exec/hdfs-parquet-scanner.cc M testdata/data/README A testdata/data/zero_rows_one_row_group.parquet A testdata/data/zero_rows_zero_row_groups.parquet A testdata/workloads/functional-query/queries/QueryTest/parquet-zero-rows.test M tests/query_test/test_scanners.py 6 files changed, 65 insertions(+), 1 deletion(-) Approvals: Internal Jenkins: Verified Alex Behm: Looks good to me, approved -- To view, visit http://gerrit.cloudera.org:8080/4693 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-MessageType: merged Gerrit-Change-Id: I50ac3df6ff24bc5c384ef22e0f804a5132adb62e Gerrit-PatchSet: 3 Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-Owner: Alex Behm <alex.b...@cloudera.com> Gerrit-Reviewer: Alex Behm <alex.b...@cloudera.com> Gerrit-Reviewer: Internal Jenkins Gerrit-Reviewer: Marcel Kornacker <mar...@cloudera.com>
