Description
While running performance tests which were concurrently committing to multiple branches (one thread per branch) I'm getting a lot of ConcurrentRefUpdateExceptions in the log. I guess this should be somehow handled as this situation is resulting in missing commits in refs/meta/gitblit/reflog.
The stacktrace:
Failed to commit reflog entry to /opt/data/apps/conc6.git
org.eclipse.jgit.api.errors.ConcurrentRefUpdateException: Could not lock HEAD. RefUpdate return code was: LOCK_FAILURE
at com.gitblit.utils.RefLogUtils.updateRefLog(RefLogUtils.java:290)
at com.gitblit.git.GitblitReceivePack.updateGitblitRefLog(GitblitReceivePack.java:489)
at com.gitblit.git.GitblitReceivePack.onPostReceive(GitblitReceivePack.java:369)
at org.eclipse.jgit.transport.ReceivePack.service(ReceivePack.java:253)
at org.eclipse.jgit.transport.ReceivePack.receive(ReceivePack.java:161)
at org.eclipse.jgit.http.server.ReceivePackServlet.doPost(ReceivePackServlet.java:193)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:644)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
at org.eclipse.jgit.http.server.glue.UrlPipeline$Chain.doFilter(UrlPipeline.java:237)
at org.eclipse.jgit.http.server.ReceivePackServlet$Factory.doFilter(ReceivePackServlet.java:150)
at org.eclipse.jgit.http.server.glue.UrlPipeline$Chain.doFilter(UrlPipeline.java:235)
at org.eclipse.jgit.http.server.RepositoryFilter.doFilter(RepositoryFilter.java:151)
at org.eclipse.jgit.http.server.glue.UrlPipeline$Chain.doFilter(UrlPipeline.java:235)
at org.eclipse.jgit.http.server.NoCacheFilter.doFilter(NoCacheFilter.java:80)
at org.eclipse.jgit.http.server.glue.UrlPipeline$Chain.doFilter(UrlPipeline.java:235)
at org.eclipse.jgit.http.server.glue.UrlPipeline.service(UrlPipeline.java:215)
at org.eclipse.jgit.http.server.glue.SuffixPipeline.service(SuffixPipeline.java:101)
at org.eclipse.jgit.http.server.glue.MetaFilter.doFilter(MetaFilter.java:175)
at com.gitblit.servlet.GitServlet.service(GitServlet.java:96)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
at com.google.inject.servlet.ServletDefinition.doServiceImpl(ServletDefinition.java:287)
at com.google.inject.servlet.ServletDefinition.doService(ServletDefinition.java:277)
at com.google.inject.servlet.ServletDefinition.service(ServletDefinition.java:182)
at com.google.inject.servlet.ManagedServletPipeline.service(ManagedServletPipeline.java:91)
at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:91)
at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:294)
at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:88)
at com.gitblit.servlet.AccessRestrictionFilter.doFilter(AccessRestrictionFilter.java:254)
at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:88)
at com.gitblit.servlet.EnforceAuthenticationFilter.doFilter(EnforceAuthenticationFilter.java:99)
at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:88)
at com.gitblit.servlet.ProxyFilter$1.doFilter(ProxyFilter.java:89)
at com.gitblit.servlet.ProxyFilter.doFilter(ProxyFilter.java:92)
at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:88)
at com.google.inject.servlet.ManagedFilterPipeline.dispatch(ManagedFilterPipeline.java:120)
at com.google.inject.servlet.GuiceFilter$1.call(GuiceFilter.java:133)
at com.google.inject.servlet.GuiceFilter$1.call(GuiceFilter.java:130)
at com.google.inject.servlet.GuiceFilter$Context.call(GuiceFilter.java:203)
at com.google.inject.servlet.GuiceFilter.doFilter(GuiceFilter.java:130)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:537)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1085)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:658)
at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:222)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1556)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1513)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)`