-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Mark,
On 4/2/14, 5:20 PM, Mark Eggers wrote: > Chris, > > On 4/2/2014 1:54 PM, Christopher Schultz wrote: >> -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 >> >> Mark, >> >> On 4/2/14, 4:30 PM, Mark Eggers wrote: >>> Chris, >>> >>> On 4/2/2014 1:05 PM, Christopher Schultz wrote: >>>> -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 >>>> >>>> Chuck, >>>> >>>> On 4/2/14, 8:21 AM, Caldarale, Charles R wrote: >>>>>> From: Elias Kopsiaftis [mailto:yemi...@gmail.com] >>>>>> Subject: tomcat randomly undeploys and redeploys the >>>>>> applications >>>>> >>>>>> I deploy the application, then in the log file >>>>>> catalina.out i get many messages from WebappClassLoader >>>>>> clearReferencesThreads saying threads appear to have >>>>>> started but have failed to stop >>>>> >>>>> This is an indication that your webapp is not managing its >>>>> threads properly. >>>>> >>>>>> then finally, Ill get a message from HostConfig >>>>>> checkResources that says its undeploying the context, >>>>>> and then it redeploys. >>>>> >>>>> This is sometimes caused by incorrect timestamps on the >>>>> bits of the webapp that Tomcat monitors, or an incorrect >>>>> clock setting on the system Tomcat is running on. The >>>>> mismatch makes it appear that the webapp is being updated >>>>> continuously. >>>> >>>> I've found that in development, a single update can cause >>>> Tomcat to go into a loop of redeployments, re-deploying my >>>> web application every few seconds or so. If I let it go, it >>>> does finally stop reloading and settle down. >>>> >>> >>> Can you describe your development environment a little bit, >>> and any thoughts as to what might trigger this loop of >>> redeployments? >> >> I use Eclipse for development, but our "real" build process is >> ant-based. We have some watched resources configured outside the >> default (stuff like Struts config files, etc.). >> > > Ah, makes sense. > >> When I do a build while Tomcat is running, usually I get one >> webapp reload, but sometimes I get a series of reloads. It >> usually gets so irritating (our webapp takes about 10 seconds to >> reload) that I just kill Tomcat and immediately restart it. It >> starts up once and all is well after that. >> > > Yep, and in the process more files are copied about, and that > triggers another reload. > > Fun, fun. No, the deployment update takes like one or two seconds. It's usually something like copying less than 10 class files or whatever. It's nearly instantaneous. Whatever happens, it's not because I'm updating files during the reload. I could understand that situation. What I observe is that I update my application, I wait maybe 10 seconds, and then Tomcat reloads my application multiple times before I just kill it. >>> I've not seen this, but it could explain some issues some the >>> developers I support are seeing. >> >> It definitely happens, and I never remember to enable the DEBUG >> logging to find out what resource it thinks has been updated >> until after it happens, at which point I just don't care. Perhaps >> I should enable it right now :) >> >> - -chris > > I've managed to make this happen in my environment now (NetBeans > 7.4, Maven 3.2.1, Tomcat 7.0.42 - all will be upgraded soon). I > just needed an application that takes a bit longer to load. I only > managed to trigger two reloads, so it's not much of an issue. > > Maybe look at adding the backgroundProcessorDelay attribute to the > context? I don't know what would happen if the context got a string > of reload requests within the delay interval. Would it queue them > up one after the other, or would it just execute one? I think it's more important to see what file(s) Tomcat thinks is(are) being updated. I wonder if it's the same file, or if there's some weird timestamp issue happening. Perhaps there is even some kind of edge case where a resource's last-modified date isn't being updated properly. In most cases, Tomcat reloads my application a single time, as expected. These reload-storms are fairly rare. - -chris -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBCAAGBQJTPYcLAAoJEBzwKT+lPKRYf/gQAKhUNIp0yIP24g6fctOppPGC 0WbacCWGaJwC9Xbuh/lNqtYRZck2943+rOZwOw4sBfwxox3dlVYGl+NHj0C4NRyW KJmH11v5gO59Di7S4NZeYGlHpbYWSZt/2HiMZAVQ6zElXN5qkSEa5WbjXJJsduSe FHD6RFLST7pvlbOuEj8L/+MldsflYTe7Mu5CykBK52GLZGMAYTFYWqcs6nrsscxc ZWEKAt1QU1barvojnoZjk4pZksihi/QwOmCJ1a+rHWUZPmtzp/9gdTon47WHDcXU NVEQLOHJgtolJI2XYMVXFZPVOEeD80PWdQ+aIUAozOR954odw9RcZRz71EiNAagB YBImgFi0zFNwVKivi4yqKHGex8LPj6qGuDI2Nd48Za4s6gN90fpHwpYFzrq3dnnv ep7Jf1qHNiGc70s//TH8iKZToCkN/N2Sythlv729NEFGdXBkn0Ph8RVhPmxiYiwu WrIXrk875m2241QBubcuaNFnPPmNA2cj0IkHB8QDM+35wUI40sx+vtMvLV3U674O JBATY5Oiq26jj585OAsNJJsNY1y33rkH0tqZNEPTYUfqSW4FUxHe0J6TWf7CMujF sPjQqk1kXawsyNJNeGqKxUqW6LHvo+dX40/FmgAl4llkOCU9DFXxdhZVBg14UQdC OeWlyGTxwovZZEdJJqtO =r81a -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
