hi all, I have a question about the querying large number of entities. I'm using JPA and JPQL.
When I deploy my application, it doesn't work when my query has a large number of results in it. Looks like it might have timeout issues. Also, the log looks like this: 05-24 05:27PM 31.817 /computeIntersection 200 28933ms 15608cpu_ms 7791api_cpu_ms 0kb Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv: 1.9.1.7) Gecko/20091221 Firefox/3.5.7 GTB6,gzip(gfe) 69.154.53.31 - - [24/May/2010:17:28:00 -0700] "POST / computeIntersection HTTP/1.1" 200 0 "http:// edgeintersection.appspot.com/" "Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.1.7) Gecko/20091221 Firefox/3.5.7 GTB6,gzip(gfe)" "edgeintersection.appspot.com" E 05-24 05:28PM 00.687 org.datanucleus.transaction.Transaction commit: Operation commit failed on resource: org.datanucleus.store.appengine.datastorexaresou...@1846d05, error code UNKNOWN and transaction: [DataNucleus Transaction, ID=Xid= W 05-24 05:28PM 00.730 A serious problem was encountered with the process that handled this request, causing it to exit. This is likely to cause a new process to be used for the next request to your application. If you see this message frequently, you may be throwing exceptions during the initialization of your application. (Error code 104) Is there an efficient way to perform JPQL query operation(even simple query operation like selecting all the entities from the datastore) for a large number of entities? -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
