[jira] [Created] (NUTCH-3111) Fix some potential resource leak

[Chengxin Xu (Jira)]

Chengxin Xu created NUTCH-3111:
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             Summary: Fix some potential resource leak
                 Key: NUTCH-3111
                 URL: https://issues.apache.org/jira/browse/NUTCH-3111
             Project: Nutch
          Issue Type: Improvement
          Components: plugin, tool, util
    Affects Versions: 1.20
            Reporter: Chengxin Xu
             Fix For: 1.20


I found some resources that were not properly handled(never closed/possibly can 
not reach), and using try-with stmt to fix them

src/java/org/apache/nutch/tools/ResolveUrls.java#
resolveUrls
src/java/org/apache/nutch/util/EncodingDetector.java#
main
src/java/org/apache/nutch/util/GZIPUtils.java#
unzip
src/plugin/scoring-similarity/src/java/org/apache/nutch/scoring/similarity/cosine/Model.java#
createModel
src/plugin/subcollection/src/java/org/apache/nutch/collection/CollectionManager.java#
save



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