It may be possible for temporary files to accumulator until the Solr process is
shut down
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Key: SOLR-1953
URL: https://issues.apache.org/jira/browse/SOLR-1953
Project: Solr
Issue Type: Bug
Components: update
Affects Versions: 1.4.1, 1.5
Reporter: Karl Wright
While researching SOLR-1951, the behavior of commons-fileupload in handling
multipart form posts came into question. commons-fileupload creates a
temporary file for the main content area of such posts, and purportedly has a
background thread which cleans up these files. However, Mark Miller discovered
that the javadoc in this matter may be incorrect, and that commons-fileupload
may in fact just be adding files to the JVM's list of files needing cleanup on
exit.
If so, this will show up in two ways: first, temporary files will accumulate in
the java.io.tmpdir area. Second, non-heap memory for the JVM will slowly
increase over time (since the file pointers the JVM tracks in this way are not
kept in the java heap).
I will attach a potential fix; however, this ticket should be viewed as a
workitem for the need for further research in this area.
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