我正在使用GAE和Google Cloud SQL的Web应用程序端口。我在开发过程中在本地使用MySQL 5.6和DevAppServer，并且我有一些查询需要超过5秒才能返回。似乎存在某种默认超时，并且在DevAppServer 中大约5秒后查询失败。我还没有尝试直接在GAE中运行它（主要是因为我无法完成页面，因为查询一直失败）。
这是调用堆栈：
Aug 08, 2016 10:34:05 AM org.glassfish.jersey.server.ServerRuntime$Responder mapException
FINER: Starting mapping of the exception.
org.glassfish.jersey.server.internal.process.MappableException: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
The last packet successfully received from the server was 5,006 milliseconds ago. The last packet sent successfully to the server was 5,001 milliseconds ago.
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.mapTargetToRuntimeEx(AbstractJavaResourceMethodDispatcher.java:179)
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.access$200(AbstractJavaResourceMethodDispatcher.java:72)
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:149)
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:161)
at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$ResponseOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:160)
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:99)
at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:389)
at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:347)
at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:102)
at org.glassfish.jersey.server.ServerRuntime$2.run(ServerRuntime.java:326)
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)
at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
at org.glassfish.jersey.internal.Errors.process(Errors.java:267)
at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:317)
at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:305)
at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1154)
at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:473)
at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:427)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:388)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:341)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:228)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166)
at com.google.appengine.api.socket.dev.DevSocketFilter.doFilter(DevSocketFilter.java:74)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.tools.development.ResponseRewriterFilter.doFilter(ResponseRewriterFilter.java:128)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.tools.development.HeaderVerificationFilter.doFilter(HeaderVerificationFilter.java:34)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java:63)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:50)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java:125)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.tools.development.DevAppServerModulesFilter.doDirectRequest(DevAppServerModulesFilter.java:366)
at com.google.appengine.tools.development.DevAppServerModulesFilter.doDirectModuleRequest(DevAppServerModulesFilter.java:349)
at com.google.appengine.tools.development.DevAppServerModulesFilter.doFilter(DevAppServerModulesFilter.java:116)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
at com.google.appengine.tools.development.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:98)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:511)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:326)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:923)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:547)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
The last packet successfully received from the server was 5,006 milliseconds ago. The last packet sent successfully to the server was 5,001 milliseconds ago.
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at com.google.appengine.tools.development.agent.runtime.Runtime.newInstance_(Runtime.java:142)
at com.google.appengine.tools.development.agent.runtime.Runtime.newInstance(Runtime.java:150)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:404)
at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:981)
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3465)
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3365)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3805)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2478)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2625)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2551)
at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1861)
at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1962)
at com.mysql.jdbc.CallableStatement.executeQuery(CallableStatement.java:858)
at com.[redacted].[redacted].sql.SqlQuery.executeQuery(SqlQuery.java:132)
at com.[redacted].[redacted].business.user.InterfaceManager.performDQLSearch(InterfaceManager.java:216)
at com.[redacted].[redacted].business.user.InterfaceManager.performFilterSearch(InterfaceManager.java:275)
at com.[redacted].[redacted].rest.client.Search.searchFilter(Search.java:139)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.google.appengine.tools.development.agent.runtime.Runtime.invoke(Runtime.java:130)
at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory$1.invoke(ResourceMethodInvocationHandlerFactory.java:81)
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:144)
... 55 more
Caused by: java.net.SocketException: Socket operation timed out: The API call remote_socket.Receive() took too long to respond and was cancelled.
at com.google.appengine.api.socket.SocketApiHelper.makeSyncCall(SocketApiHelper.java:76)
at com.google.appengine.api.socket.AppEngineSocketImpl.receive(AppEngineSocketImpl.java:710)
at com.google.appengine.api.socket.AppEngineSocketInputStream.read(AppEngineSocketInputStream.java:35)
at com.mysql.jdbc.util.ReadAheadInputStream.fill(ReadAheadInputStream.java:100)
at com.mysql.jdbc.util.ReadAheadInputStream.readFromUnderlyingStreamIfNecessary(ReadAheadInputStream.java:143)
at com.mysql.jdbc.util.ReadAheadInputStream.read(ReadAheadInputStream.java:173)
at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:2954)
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3375)
... 74 more
Aug 08, 2016 10:34:05 AM com.[redacted].[redacted].rest.internal.GenericExceptionMapper toResponse
SEVERE: Communications link failure
The last packet successfully received from the server was 5,006 milliseconds ago. The last packet sent successfully to the server was 5,001 milliseconds ago.
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
The last packet successfully received from the server was 5,006 milliseconds ago. The last packet sent successfully to the server was 5,001 milliseconds ago.
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at com.google.appengine.tools.development.agent.runtime.Runtime.newInstance_(Runtime.java:142)
at com.google.appengine.tools.development.agent.runtime.Runtime.newInstance(Runtime.java:150)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:404)
at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:981)
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3465)
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3365)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3805)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2478)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2625)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2551)
at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1861)
at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1962)
at com.mysql.jdbc.CallableStatement.executeQuery(CallableStatement.java:858)
at com.[redacted].[redacted].sql.SqlQuery.executeQuery(SqlQuery.java:132)
at com.[redacted].[redacted].business.user.InterfaceManager.performDQLSearch(InterfaceManager.java:216)
at com.[redacted].[redacted].business.user.InterfaceManager.performFilterSearch(InterfaceManager.java:275)
at com.[redacted].[redacted].rest.client.Search.searchFilter(Search.java:139)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.google.appengine.tools.development.agent.runtime.Runtime.invoke(Runtime.java:130)
at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory$1.invoke(ResourceMethodInvocationHandlerFactory.java:81)
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:144)
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:161)
at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$ResponseOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:160)
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:99)
at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:389)
at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:347)
at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:102)
at org.glassfish.jersey.server.ServerRuntime$2.run(ServerRuntime.java:326)
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)
at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
at org.glassfish.jersey.internal.Errors.process(Errors.java:267)
at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:317)
at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:305)
at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1154)
at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:473)
at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:427)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:388)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:341)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:228)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166)
at com.google.appengine.api.socket.dev.DevSocketFilter.doFilter(DevSocketFilter.java:74)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.tools.development.ResponseRewriterFilter.doFilter(ResponseRewriterFilter.java:128)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.tools.development.HeaderVerificationFilter.doFilter(HeaderVerificationFilter.java:34)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java:63)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:50)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java:125)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.tools.development.DevAppServerModulesFilter.doDirectRequest(DevAppServerModulesFilter.java:366)
at com.google.appengine.tools.development.DevAppServerModulesFilter.doDirectModuleRequest(DevAppServerModulesFilter.java:349)
at com.google.appengine.tools.development.DevAppServerModulesFilter.doFilter(DevAppServerModulesFilter.java:116)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
at com.google.appengine.tools.development.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:98)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:511)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:326)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:923)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:547)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
Caused by: java.net.SocketException: Socket operation timed out: The API call remote_socket.Receive() took too long to respond and was cancelled.
at com.google.appengine.api.socket.SocketApiHelper.makeSyncCall(SocketApiHelper.java:76)
at com.google.appengine.api.socket.AppEngineSocketImpl.receive(AppEngineSocketImpl.java:710)
at com.google.appengine.api.socket.AppEngineSocketInputStream.read(AppEngineSocketInputStream.java:35)
at com.mysql.jdbc.util.ReadAheadInputStream.fill(ReadAheadInputStream.java:100)
at com.mysql.jdbc.util.ReadAheadInputStream.readFromUnderlyingStreamIfNecessary(ReadAheadInputStream.java:143)
at com.mysql.jdbc.util.ReadAheadInputStream.read(ReadAheadInputStream.java:173)
at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:2954)
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3375)
... 74 more
Aug 08, 2016 10:34:05 AM com.[redacted].[redacted].rest.internal.ResponseUtils addCommonHeaders
FINE: Set response header -> Access-Control-Allow-Origin: *
Aug 08, 2016 10:34:05 AM org.glassfish.jersey.server.ServerRuntime$Responder mapException
FINER: Exception 'Communications link failure
The last packet successfully received from the server was 5,006 milliseconds ago. The last packet sent successfully to the server was 5,001 milliseconds ago.' has been mapped by 'com.[redacted].[redacted].rest.internal.GenericExceptionMapper' to response 'Internal Server Error' (500:SERVER_ERROR).
它能够在MySQL驱动程序代码中设置一个断点并发现此异常：
java.net.SocketException：套接字操作超时：API调用 remote_socket.Receive（）花了太长时间才响应并被取消了。
套接字操作超时：API调用remote_socket.Receive（） 太长时间无法回复并被取消。
现在我尝试使用我的库代码在GAE DevAppServer 之外运行相同的SP调用，它运行正常：
package com.[redacted].poc.sql.TestSQL;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.apache.commons.lang3.time.StopWatch;
import com.[redacted].[redacted].data.DataTable;
import com.[redacted].[redacted].sql.AutoConnection;
import com.[redacted].[redacted].sql.DatabaseManager;
import com.[redacted].[redacted].sql.ResultSetEx;
import com.[redacted].[redacted].sql.SqlIntegerParameter;
import com.[redacted].[redacted].sql.SqlQuery;
import com.[redacted].[redacted].sql.SqlStringParameter;
/**
* Hello world!
*
*/
public class App {
private static final Logger logger = Logger.getLogger(App.class.getName());
public static void main(String[] args) {
try {
DatabaseManager.initialize("jdbc:mysql://127.0.0.1:3306/[redacted]?user=[redacted]&password=[redacted]");
final String xml = [redacted];
final StopWatch swTotal = new StopWatch();
final StopWatch swRs1 = new StopWatch();
final StopWatch swRs2 = new StopWatch();
try (AutoConnection db = new AutoConnection(DatabaseManager.getDbConnection())) {
assert (db != null);
assert (db.getConnection() != null);
try (final SqlQuery sql = DatabaseManager.buildStoredProcedureCall(logger, db.getConnection(),
"text_search", new SqlIntegerParameter("user_id", Integer.valueOf(2)),
new SqlIntegerParameter("project_id", Integer.valueOf(2)),
new SqlStringParameter("search_criteria_xml", xml), new SqlIntegerParameter("page_number", 1),
new SqlIntegerParameter("page_size", 25))) {
logger.info("Running query");
swTotal.start();
swRs1.start();
try (final ResultSetEx rs = new ResultSetEx(sql.executeQuery())) {
swRs1.stop();
final DataTable dt = DatabaseManager.copyToDataTable(rs);
logger.info(String.format("Returned %d rows", dt.getTotalRows()));
boolean pagingOk = false;
if (sql.getMoreResults()) {
swRs2.start();
try (final ResultSetEx rs2 = new ResultSetEx(sql.getResultSet())) {
swRs2.stop();
if (rs2.next()) {
pagingOk = true;
final int totalRows = rs2.getInt("total_rows");
final int lastPageNum = rs2.getInt("page_number");
final int lastPageSize = rs2.getInt("page_size");
final int totalPages = rs2.getInt("total_pages");
final String searchXml = rs2.getString("search_criteria_xml");
dt.setTotalRows(totalRows);
dt.setPageNumber(lastPageNum);
dt.setPageSize(lastPageSize);
dt.setTotalPages(totalPages);
dt.setSearchXml(searchXml);
}
}
}
if (!pagingOk) {
throw new Exception("Paging information results missing");
}
}
}
} finally {
logger.info("Total elapsed time : " + swTotal.toString());
logger.info("1st result set time :" + swRs1.toString());
logger.info("2nd result set time :" + swRs2.toString());
}
} catch (Exception ex) {
logger.log(Level.SEVERE, ex.getMessage(), ex);
}
}
}
这是输出：
Aug 08, 2016 10:42:46 AM com.[redacted].poc.sql.TestSQL.App main
INFO: Running query
Aug 08, 2016 10:42:55 AM com.[redacted].poc.sql.TestSQL.App main
INFO: Returned 25 rows
Aug 08, 2016 10:42:55 AM com.[redacted].poc.sql.TestSQL.App main
INFO: Total elapsed time : 00:00:08.900
Aug 08, 2016 10:42:55 AM com.[redacted].poc.sql.TestSQL.App main
INFO: 1st result set time :00:00:08.876
Aug 08, 2016 10:42:55 AM com.[redacted].poc.sql.TestSQL.App main
INFO: 2nd result set time :00:00:00.000
所以在我看来，GAE库中的某些内容强制在套接字级别杀死SQL连接。应用程序需要处理查询结果，所以我不能忽略它。有没有人找到设置或其他方法来解决此问题？我已经完成了nausium的GAE文档，并做了大量的Google搜索无济于事。我觉得奇怪的是，对于你无法覆盖的查询会有5秒的硬限制。我知道他们在UrlFetch和任务队列调用上允许60秒的最大超时，所以我希望我只是错过了一些东西......
答案 0 :(得分：0)
我向Google提交了一个错误，他们确认这是一个问题，所以我想这不是我。 :)
https://code.google.com/p/googleappengine/issues/detail?id=13194