我在我的Java Appengine应用程序中有几个servlet,它们进行内存排序并需要几秒钟才能完成。这些完全没有错误。
然而,最近我启用了Appengine的appstats,并开始收到以下错误:
java.lang.OutOfMemoryError: Java heap space
at java.util.Arrays.copyOf(Unknown Source)
at java.lang.AbstractStringBuilder.expandCapacity(Unknown Source)
at java.lang.AbstractStringBuilder.append(Unknown Source)
at java.lang.StringBuilder.append(Unknown Source)
at java.lang.StringBuilder.append(Unknown Source)
at java.lang.StringBuilder.append(Unknown Source)
at com.google.appengine.repackaged.com.google.protobuf.TextFormat$TextGenerator.write(TextFormat.java:344)
at com.google.appengine.repackaged.com.google.protobuf.TextFormat$TextGenerator.print(TextFormat.java:332)
at com.google.appengine.repackaged.com.google.protobuf.TextFormat.printUnknownFields(TextFormat.java:249)
at com.google.appengine.repackaged.com.google.protobuf.TextFormat.print(TextFormat.java:47)
at com.google.appengine.repackaged.com.google.protobuf.TextFormat.printToString(TextFormat.java:73)
at com.google.appengine.tools.appstats.Recorder.makeSummary(Recorder.java:157)
at com.google.appengine.tools.appstats.Recorder.makeSyncCall(Recorder.java:239)
at com.google.apphosting.api.ApiProxy.makeSyncCall(ApiProxy.java:98)
at com.google.appengine.api.datastore.DatastoreApiHelper.makeSyncCall(DatastoreApiHelper.java:54)
at com.google.appengine.api.datastore.PreparedQueryImpl.runQuery(PreparedQueryImpl.java:127)
at com.google.appengine.api.datastore.PreparedQueryImpl.asQueryResultList(PreparedQueryImpl.java:81)
at org.datanucleus.store.appengine.query.DatastoreQuery.fulfillEntityQuery(DatastoreQuery.java:379)
at org.datanucleus.store.appengine.query.DatastoreQuery.executeQuery(DatastoreQuery.java:289)
at org.datanucleus.store.appengine.query.DatastoreQuery.performExecute(DatastoreQuery.java:239)
at org.datanucleus.store.appengine.query.JDOQLQuery.performExecute(JDOQLQuery.java:89)
at org.datanucleus.store.query.Query.executeQuery(Query.java:1489)
at org.datanucleus.store.query.Query.executeWithArray(Query.java:1371)
at org.datanucleus.jdo.JDOQuery.execute(JDOQuery.java:243)
at com.poo.pooserver.dataaccess.DataAccessHelper.getPooStream(DataAccessHelper.java:204)
at com.poo.pooserver.GetPooStreamServlet.doPost(GetPooStreamServlet.java:58)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:713)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166)
at com.google.appengine.tools.appstats.AppstatsFilter.doFilter(AppstatsFilter.java:92)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)