orc-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From omalley <...@git.apache.org>
Subject [GitHub] orc issue #60: ORC-101 fix broken encoding for string and decimal bloom filt...
Date Tue, 20 Sep 2016 19:05:00 GMT
Github user omalley commented on the issue:

    https://github.com/apache/orc/pull/60
  
    Ok, the latest push has a few changes:
    * bloom_filter_utf8 streams use a new encoding with bytes instead of long[]. This is much
more efficient for performance and storage size.
    * all column types now have bloom_filter_utf8 streams (largely to get the new representation)
    * the default is to just write the new bloom_filter_utf8 streams that old readers will
ignore. There is an option to write both bloom_filter and bloom_filter_utf8 streams to support
old readers.
    * there is an option for new readers to ignore the old bloom filters.
    * files generated after hive-12055 will correctly use the utf8 encoding even for the bloom_filter
stream.


---
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 infrastructure@apache.org or file a JIRA ticket
with INFRA.
---

Mime
View raw message