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From "James Leigh (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HTTPCLIENT-1299) FileNotFoundException on Cached Variant
Date Fri, 12 Apr 2013 19:08:15 GMT

     [ https://issues.apache.org/jira/browse/HTTPCLIENT-1299?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

James Leigh updated HTTPCLIENT-1299:
------------------------------------

        Fix Version/s:     (was: 4.2.4)
                           (was: 4.3 Beta1)
    Affects Version/s: 4.2.4
                       4.3 Beta1
    
> FileNotFoundException on Cached Variant
> ---------------------------------------
>
>                 Key: HTTPCLIENT-1299
>                 URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1299
>             Project: HttpComponents HttpClient
>          Issue Type: Bug
>          Components: Cache
>    Affects Versions: 4.2.3, 4.2.4, 4.3 Beta1
>         Environment: OpenJDK 64-Bit Server VM (6b24-1.11.5-0ubuntu1~12.04.1)
>            Reporter: James Leigh
>              Labels: regression
>
> This bug was introduced in org.apache.http.impl.client.cache.BasicHttpCache in 4.2.3.
> cacheAndReturnResponse takes the response and passes it to storeInCache. It then calls
generateResponse with the *same* response resource. The problem is that storeInCache passes
the resource to doGetUpdatedParentEntry, which makes a copy and *deletes* the resource it
was passed (oldResource).
> This did not occur in 4.2.2 because in 4.2.2 doGetUpdatedParentEntry did not delete the
resource. If the resource is being deleted after it is copied in 4.2.3, then it must not be
used to generateResponse.
> Here is a stack trace with line numbers.
> 	BasicHttpCache.doGetUpdatedParentEntry(String, HttpCacheEntry, HttpCacheEntry, String,
String) line: 202	
> 	BasicHttpCache$1.update(HttpCacheEntry) line: 119	
> 	ManagedHttpCacheStorage.updateEntry(String, HttpCacheUpdateCallback) line: 134	
> 	BasicHttpCache.storeVariantEntry(HttpHost, HttpRequest, HttpCacheEntry) line: 128	
> 	BasicHttpCache.storeInCache(HttpHost, HttpRequest, HttpCacheEntry) line: 96	
> 	BasicHttpCache.cacheAndReturnResponse(HttpHost, HttpRequest, HttpResponse, Date, Date)
line: 265	
> 	CachingHttpClient.handleBackendResponse(HttpHost, HttpRequest, Date, Date, HttpResponse)
line: 919	
> 	CachingHttpClient.callBackend(HttpHost, HttpRequest, HttpContext) line: 731	
> 	CachingHttpClient.handleCacheMiss(HttpHost, HttpRequest, HttpContext) line: 510	
> 	CachingHttpClient.execute(HttpHost, HttpRequest, HttpContext) line: 436	

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