Question

我有一个测试neo4j（2.0.3）数据库，带有大约1百万个标签“B”的节点。当我从Web客户端运行下一个命令（http://localhost:7474/browser/）时：

MATCH (n:`B`) delete n

客户端崩溃，服务器也崩溃。在console.log中我收到错误：

SEVERE: The response of the WebApplicationException cannot be utilized as the response is already committed. Re-throwing to the HTTP container
javax.ws.rs.WebApplicationException: javax.ws.rs.WebApplicationException: org.eclipse.jetty.io.EofException
    at org.neo4j.server.rest.repr.OutputFormat$1.write(OutputFormat.java:174)
    at com.sun.jersey.core.impl.provider.entity.StreamingOutputProvider.writeTo(StreamingOutputProvider.java:71)
    at com.sun.jersey.core.impl.provider.entity.StreamingOutputProvider.writeTo(StreamingOutputProvider.java:57)
    at com.sun.jersey.spi.container.ContainerResponse.write(ContainerResponse.java:306)
    at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1437)
    at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1349)
    at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1339)
    at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:416)
    at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:537)
    at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:699)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
    at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:698)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1506)
    at org.neo4j.server.rest.security.SecurityFilter.doFilter(SecurityFilter.java:112)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1477)
    at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:503)
    at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:211)
    at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1096)
    at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:432)
    at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:175)
    at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1030)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:136)
    at org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:52)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
    at org.eclipse.jetty.server.Server.handle(Server.java:445)
    at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:268)
    at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:229)
    at org.eclipse.jetty.io.AbstractConnection$ReadCallback.run(AbstractConnection.java:358)
    at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:601)
    at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:532)
    at java.lang.Thread.run(Unknown Source)
Caused by: javax.ws.rs.WebApplicationException: org.eclipse.jetty.io.EofException
    at org.neo4j.server.rest.repr.formats.StreamingJsonFormat$StreamingRepresentationFormat.flush(StreamingJsonFormat.java:401)
    at org.neo4j.server.rest.repr.formats.StreamingJsonFormat$StreamingRepresentationFormat.complete(StreamingJsonFormat.java:389)
    at org.neo4j.server.rest.repr.MappingRepresentation.serialize(MappingRepresentation.java:43)
    at org.neo4j.server.rest.repr.OutputFormat$1.write(OutputFormat.java:160)
    ... 30 more
Caused by: org.eclipse.jetty.io.EofException
    at org.eclipse.jetty.io.ChannelEndPoint.flush(ChannelEndPoint.java:186)
    at org.eclipse.jetty.io.WriteFlusher.write(WriteFlusher.java:335)
    at org.eclipse.jetty.io.AbstractEndPoint.write(AbstractEndPoint.java:125)
    at org.eclipse.jetty.server.HttpConnection$ContentCallback.process(HttpConnection.java:784)
    at org.eclipse.jetty.util.IteratingCallback.iterate(IteratingCallback.java:79)
    at org.eclipse.jetty.server.HttpConnection.send(HttpConnection.java:356)
    at org.eclipse.jetty.server.HttpChannel.sendResponse(HttpChannel.java:631)
    at org.eclipse.jetty.server.HttpChannel.write(HttpChannel.java:661)
    at org.eclipse.jetty.server.HttpOutput.flush(HttpOutput.java:151)
    at com.sun.jersey.spi.container.servlet.WebComponent$Writer.flush(WebComponent.java:315)
    at com.sun.jersey.spi.container.ContainerResponse$CommittingOutputStream.flush(ContainerResponse.java:145)
    at org.codehaus.jackson.impl.Utf8Generator.flush(Utf8Generator.java:1091)
    at org.neo4j.server.rest.repr.formats.StreamingJsonFormat$StreamingRepresentationFormat.flush(StreamingJsonFormat.java:397)
    ... 33 more
Caused by: java.io.IOException: An established connection was aborted by the software in your host machine
    at sun.nio.ch.SocketDispatcher.writev0(Native Method)
    at sun.nio.ch.SocketDispatcher.writev(Unknown Source)
    at sun.nio.ch.IOUtil.write(Unknown Source)
    at sun.nio.ch.SocketChannelImpl.write(Unknown Source)
    at org.eclipse.jetty.io.ChannelEndPoint.flush(ChannelEndPoint.java:167)
    ... 45 more

我该如何解决？还有，像oracle metalink这样的neo4j有一个正式的bug数据库吗？我找不到一个。

谢谢。

Answer 1

我猜这个交易增长的方式太大了。使用

MATCH (n:`B`) delete n LIMIT 50000

并多次运行，直到所有B个节点都已消失。

使用Web客户端删除时neo4j崩溃

1 个答案: