metamodel-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Dennis Du Krøger (JIRA) <j...@apache.org>
Subject [jira] [Created] (METAMODEL-187) ExcelDataContext uses more memory than it needs to for File-based resources.
Date Tue, 08 Sep 2015 13:50:45 GMT
Dennis Du Krøger created METAMODEL-187:
------------------------------------------

             Summary: ExcelDataContext uses more memory than it needs to for File-based resources.
                 Key: METAMODEL-187
                 URL: https://issues.apache.org/jira/browse/METAMODEL-187
             Project: Apache MetaModel
          Issue Type: Bug
            Reporter: Dennis Du Krøger
            Priority: Minor


ExcelDataContext uses the input stream from resources, even if it is a FileResource. This
is pretty wasteful memory-wise, both according to http://poi.apache.org/spreadsheet/quick-guide.html#FileInputStream
and to own tests; I made a naïve change that uses the internal File of FileResources on a
huge file. With InputStream, getting the defaultSchema used around 950 MB in average, while
it used around 650 in average with the File based version (nothing scientific, just eyeballed
in JVisualVM).



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message