GitHub user ashokblend opened a pull request:
https://github.com/apache/incubator-carbondata/pull/427
[CARBONDATA-429]reduce the no of of io operation being done for dictionary.
**Problem**
Every single query is triggered by user, carbon does an io operation for
all dictionary column to check if its dictionary meta is modified.
**Solution**
This PR will try to reduce the no of IO operation done for above mentioned
problem. Idea behind solution is, check for modification of dictionary meta
only if table has been loaded with new segment.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/ashokblend/incubator-carbondata dictmetacache
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/incubator-carbondata/pull/427.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #427
----
commit 1c23194289d49f9190e425dfc4d9b960805909ad
Author: ashok.blend <[email protected]>
Date: 2016-12-13T01:30:10Z
reduce the no of of io operation being done for dictionary.
Idea is, check is table is modified then only tries to reload the cache.
----
---
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.
---
