Uwe Schindler created SOLR-5011:
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Summary: Manage to close all ResourceLoaders when cores are
unloaded/reloaded
Key: SOLR-5011
URL: https://issues.apache.org/jira/browse/SOLR-5011
Project: Solr
Issue Type: Bug
Reporter: Uwe Schindler
Followup of SOLR-5009 and SOLR-4948: I fixed almost all places where Solr
creates SolrResourceLoaders lazily. Solr should only create a
SolrResourceLoader when the CoreContainer starts up and when a new Core is
created (as a child SolrResourceLoader). There are already issues open to fix
the hierarchy, but this issue is about corrcetly closing the
SolrResourceLoader, as this is mandatory for correct class unloading and
freeing up system resources, including closing JAR files (to be able to delete
them on windows).
SolrCore currently does not close its own SolrResourceLoader and the logic for
reopening is un-understandable to me. In addition the SolrResourceLoader is
shared by the config and the core and sometimes also the reopened core. I have
no idea when it can be closed safely.
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