[ https://issues.apache.org/jira/browse/HIVE-15056?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Chao Sun updated HIVE-15056: ---------------------------- Attachment: HIVE-15056.2.patch Oops. Attaching patch v2 again. > Support index shifting for struct fields > ---------------------------------------- > > Key: HIVE-15056 > URL: https://issues.apache.org/jira/browse/HIVE-15056 > Project: Hive > Issue Type: Sub-task > Components: File Formats, Physical Optimizer, > Serializers/Deserializers > Reporter: Chao Sun > Assignee: Chao Sun > Attachments: HIVE-15056.1.patch, HIVE-15056.2.patch > > > In HIVE-13873, the following case doesn't work: > {code} > select s.c from tbl > {code} > where {{tbl}} is of schema: > {code} > a int > s struct<b:int,c:string> > {code} > This is because currently we generate a "pruned" schema (in terms of > {{GroupType}}) for Parquet reader to scan the data. However, on the Hive side > the object inspector still uses the original schema. In particular, in this > case for {{s.c}} the data returned by Parquet reader is in index 0, but the > object inspector tries to read it in index 1. Therefore, in correct result > will be returned. -- This message was sent by Atlassian JIRA (v6.3.4#6332)