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Re: [Php-java-bridge-users] The infamous "protocol error: , Invalid document end at col 1."
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From: <php...@li...> - 2008-08-28 22:54:08
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Just to follow up, it seems that the problem was related to including java/Java.inc on every page view, which appeared to quickly overwhelm the number of available threads (20). Instead it turns out that by moving the Java.inc require to a separate script that only runs periodically (when there are java bridge related actions to take), we fixed the problem. Justin php...@li... wrote: > Given that the exception starts with: > > php.java.bridge.ThreadPool$Delegate.run(ThreadPool.java:60) > > I'm wondering if this isn't some sort of thread pool error (or maxed out > resource issue). Or if we've otherwise misconfigured things for our > standalone setup (docs are pretty threadbare in this area). > > Anyone have any ideas? > > Justin > > > php...@li... wrote: >> More information, found the "back end log" for us it's >> /var/log/https/error_log >> >> And we seem to be getting tons of NullPointerExceptions: >> >> Aug 28 12:22:47 VMBridge ERROR: An exception occured: >> java.lang.NullPointerException >> java.lang.NullPointerException >> at php.java.bridge.StringCache.put(StringCache.java:122) >> at php.java.bridge.StringCache.getString(StringCache.java:155) >> at php.java.bridge.JavaBridge.getCachedString(JavaBridge.java:2023) >> at >> php.java.bridge.ParserString.getCachedStringValue(ParserString.java:89) >> at php.java.bridge.Request.begin(Request.java:232) >> at php.java.bridge.Parser.CALL_BEGIN(Parser.java:134) >> at php.java.bridge.Parser.parse(Parser.java:195) >> at php.java.bridge.Request.handleRequest(Request.java:377) >> at php.java.bridge.Request.handleRequests(Request.java:485) >> at php.java.bridge.JavaBridge.run(JavaBridge.java:213) >> at php.java.bridge.ThreadPool$Delegate.run(ThreadPool.java:60) >> >> Any ideas? >> >> Our version of Java (from RHEL5): >> >> $ java -version >> java version "1.4.2" >> gij (GNU libgcj) version 4.1.2 20071124 (Red Hat 4.1.2-42) >> >> Much appreciated. >> Justin Watt >> >> >> php...@li... wrote: >>> We're running the PHP/Java Bridge as a standalone Java service (not as a >>> servlet engine or J2EE service), and seem to be sporadically getting the >>> following error (from line 768 of Java.inc): >>> >>> "protocol error: , Invalid document end at col 1. Check the back end log >>> for details." >>> >>> This happens even when we're not accessing the Java Bridge code---it >>> seems to crop simply by virtue of java/Java.inc being included (at first >>> glance). We're running the latest version of the bridge 5.2.2. Obviously >>> the xml doc to parse is blank, which is why this error is happening. I >>> just don't know why. >>> >>> Additionally it seems strange for lib code like this to contain "die()" >>> statements since Java.inc gets included in larger codebases. In our case >>> it brings our platform to a screeching halt. Would be nice if it failed >>> a little more gracefully. >>> >>> But that aside, any clue as to why this would be happening so frequently >>> given our set up? Assuming a standalone setup's errors get logged to >>> Apache's error log, we're seeing not related messages in the "back end >>> log". I'm wondering if I could/should just comment out that die() >>> statement starting on line 768...? >>> >>> Thanks in advance, >>> Justin Watt >>> Federated Media >>> >>> >>> ------------------------------------------------------------------------- >>> This SF.Net email is sponsored by the Moblin Your Move Developer's challenge >>> Build the coolest Linux based applications with Moblin SDK & win great prizes >>> Grand prize is a trip for two to an Open Source event anywhere in the world >>> http://moblin-contest.org/redirect.php?banner_id=100&url=/ >>> _______________________________________________ >>> php-java-bridge-users mailing list >>> php...@li... >>> https://lists.sourceforge.net/lists/listinfo/php-java-bridge-users >> ------------------------------------------------------------------------- >> This SF.Net email is sponsored by the Moblin Your Move Developer's challenge >> Build the coolest Linux based applications with Moblin SDK & win great prizes >> Grand prize is a trip for two to an Open Source event anywhere in the world >> http://moblin-contest.org/redirect.php?banner_id=100&url=/ >> _______________________________________________ >> php-java-bridge-users mailing list >> php...@li... >> https://lists.sourceforge.net/lists/listinfo/php-java-bridge-users > > ------------------------------------------------------------------------- > This SF.Net email is sponsored by the Moblin Your Move Developer's challenge > Build the coolest Linux based applications with Moblin SDK & win great prizes > Grand prize is a trip for two to an Open Source event anywhere in the world > http://moblin-contest.org/redirect.php?banner_id=100&url=/ > _______________________________________________ > php-java-bridge-users mailing list > php...@li... > https://lists.sourceforge.net/lists/listinfo/php-java-bridge-users |
