Hello Everyone! I recently joined a project that has a Hive/Impala installation and we are experience a significant number of query failures. We are using an older version of Hive, and unfortunately there's nothing iI can do about that, but I'm wondering is how I can make Hive do better with queries to give our users a better experience.
For example, I can execute a basic SELECT * query or SELECT <fields> query without issues. However, if I attempt to: 1. Add filters 2. Do a SELECT DISTINCT 3. Perform basic aggregation I get errors like this: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.mr.MapRedTask. Could someone point me to some good guides for querying Hive and/or assisting my engineers in preventing these errors? Thanks,
