Github user Oliver-Luo commented on the pull request:
https://github.com/apache/incubator-hawq/pull/679#issuecomment-222395517
> The main hawq register steps are as follows:
> get_files_in_hdfs(filepath)
> check_parquet_format(options, files)
> firstsegno = get_metadata_from_database(options, databasename, seg_name)
> move_files_in_hdfs(options, databasename, tablename, files, firstsegno,
True)
> insert_metadata_into_database(options, databasename, tablename, seg_name,
firstsegno, sizes)
If one of the reads fails, we just exit cause no file has been changed. If
move_files_in_hdfs fails, the metadata will not be inserted. If
insert_metadata_into_database fails, we will move the files back to their
original location.
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
