hi michael,
On Tue, Jun 28, 2011 at 2:25 PM, Michael Klenk <kl...@dig.de> wrote:
>
> Hi,
>
> it seems, there exists no bug for this issue right now. The problem described
> below crashes our application several times a week. Could you please check if
> this problem is a Jackrabbit bug, or if it is an application bug due to a
> missing reset (event?) of accessCounter.
yes, it's a jackrabbit bug. could you please create a jira issue? i'll
take care of the rest.
thanks!
stefan
>
> For the moment I've patched the class ConcurrentCache like shown in patch.
>
> system: Apache sling with jackrabbit 2.2.5 for Content Management System.
>
> Thanks in advance
>
> Michael
>
> -------- Original-Nachricht --------
> Betreff: ArrayIndexOutOfBoundsException in jackrabbit-core: ConcurrentCache
> Datum: Mon, 20 Jun 2011 21:09:32 +0200
> Von: Michael Klenk <kl...@dig.de>
> Antwort an: us...@jackrabbit.apache.org
> An: us...@jackrabbit.apache.org
>
> Hi everyone,
>
> I'm experiencing some strange ArrayIndexOutOfBoundsExceptions on
> accessing the jackrabbit ConcurrentCache in 2.2.5. in Line 241 during
> shrinkIfNeeded check.
>
> Caused by: java.lang.ArrayIndexOutOfBoundsException: -14
> at
> org.apache.jackrabbit.core.cache.ConcurrentCache.shrinkIfNeeded(ConcurrentCache.java:241)
>
>
> I reviewed jackrabbit-code and I'm sure it's caused by that
> AtomicInteger for realizing accessCounter in AbstractCache, which will
> have become negative during increasing over the Integer.MAX_VALUE constant.
>
> // Semi-random start index to prevent bias against the first
> segments
> int start = (int) getAccessCount() % segments.length;
> for (int i = start; isTooBig(); i = (i + 1) % segments.length) {
> synchronized (segments[i]) {
>
> Is there any bug already reported about this problem? Is a fix or some
> workaround availlable? Can anyone confirm this problem? I haven't found
> any...
>
> Thanks in advance
>
> Michael
>
> ___________________________
>
> Uncaught Throwable java.lang.ArrayIndexOutOfBoundsException: -7
> at
> org.apache.jackrabbit.core.cache.ConcurrentCache.shrinkIfNeeded(ConcurrentCache.java:241)
> at
> org.apache.jackrabbit.core.cache.ConcurrentCache.put(ConcurrentCache.java:176)
> at
> org.apache.jackrabbit.core.persistence.bundle.AbstractBundlePersistenceManager.getBundle(AbstractBundlePersistenceManager.java:657)
> at
> org.apache.jackrabbit.core.persistence.bundle.AbstractBundlePersistenceManager.load(AbstractBundlePersistenceManager.java:400)
> at
> org.apache.jackrabbit.core.state.SharedItemStateManager.loadItemState(SharedItemStateManager.java:1819)
> at
> org.apache.jackrabbit.core.state.SharedItemStateManager.getNonVirtualItemState(SharedItemStateManager.java:1739)
> at
> org.apache.jackrabbit.core.state.SharedItemStateManager.getItemState(SharedItemStateManager.java:261)
> at
> org.apache.jackrabbit.core.state.LocalItemStateManager.getNodeState(LocalItemStateManager.java:107)
> at
> org.apache.jackrabbit.core.state.LocalItemStateManager.getItemState(LocalItemStateManager.java:172)
> at
> org.apache.jackrabbit.core.state.XAItemStateManager.getItemState(XAItemStateManager.java:260)
> at
> org.apache.jackrabbit.core.state.SessionItemStateManager.getItemState(SessionItemStateManager.java:161)
> at
> org.apache.jackrabbit.core.ItemManager.getItemData(ItemManager.java:370)
> at
> org.apache.jackrabbit.core.ItemManager.getItem(ItemManager.java:316)
> at
> org.apache.jackrabbit.core.ItemManager.getItem(ItemManager.java:610)
> at
> org.apache.jackrabbit.core.SessionImpl.getNodeById(SessionImpl.java:493)
> at
> org.apache.jackrabbit.core.SessionImpl.getNodeByIdentifier(SessionImpl.java:1045)
> at sun.reflect.GeneratedMethodAccessor31.invoke(Unknown Source)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at
> org.apache.sling.jcr.base.SessionProxyHandler$SessionProxyInvocationHandler.invoke(SessionProxyHandler.java:109)
> at $Proxy2.getNodeByIdentifier(Unknown Source)
> at
> de.dig.cms.frontend.servlet.helper.ResourceUtil.findResourceById(ResourceUtil.java:44)
> at
> de.dig.cms.frontend.servlet.CMSContentEnrichServletFilter.doFilter(CMSContentEnrichServletFilter.java:194)
> at
> org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:60)
> at
> de.dig.cms.frontend.servlet.CacheControlFilter.doFilter(CacheControlFilter.java:120)
> at
> org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:60)
> at
> de.dig.cms.cache.impl.WallCacheServletFilter.processCacheableRequest(WallCacheServletFilter.java:244)
> at
> de.dig.cms.cache.impl.WallCacheServletFilter.processCacheableRequestWithLatch(WallCacheServletFilter.java:185)
> at
> de.dig.cms.cache.impl.WallCacheServletFilter.doFilter(WallCacheServletFilter.java:154)
> at
> org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:60)
> at
> de.dig.cms.frontend.servletapi.CMSSlingHttpServletRequestFilter.doFilter(CMSSlingHttpServletRequestFilter.java:52)
> at
> org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:60)
> at
> org.apache.sling.engine.impl.SlingMainServlet.service(SlingMainServlet.java:313)
> at
> org.apache.sling.engine.impl.SlingMainServlet.service(SlingMainServlet.java:207)
> at
> org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:502)
> at
> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:389)
> at
> org.ops4j.pax.web.service.internal.HttpServiceServletHandler.handle(HttpServiceServletHandler.java:64)
> at
> org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
> at
> org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
> at
> org.ops4j.pax.web.service.internal.HttpServiceContext.handle(HttpServiceContext.java:111)
> at
> org.ops4j.pax.web.service.internal.JettyServerHandlerCollection.handle(JettyServerHandlerCollection.java:64)
> at
> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
> at org.mortbay.jetty.Server.handle(Server.java:324)
> at
> org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:535)
> at
> org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:865)
> at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:539)
> at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
> at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
> at
> org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
> at
> org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:520)
>
>
>
> --
> Mit freundlichen Grüßen
>
> Michael Klenk
>
> DIG
> Digitale Medienberatungs- und Produktions- GmbH
> Neckarstrasse 1/5
> 78727 Oberndorf
>
> Amtsgericht Stuttgart HRB 480914
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>
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>
