Aron Ahmadia created NUTCH-2154:
-----------------------------------
Summary: Nutch REST API (DB) suffering NullPointerException
Key: NUTCH-2154
URL: https://issues.apache.org/jira/browse/NUTCH-2154
Project: Nutch
Issue Type: Bug
Components: REST_api
Affects Versions: 1.11
Reporter: Aron Ahmadia
Priority: Minor
Not sure what's causing this. I tried this request both before and after a
crawl had completed.
nutch.py: POST Endpoint: /db/crawldb
nutch.py: POST Request data: {'type': 'stats', 'crawlId':
'crawl_aahmadia_2015-10-28T13_17_15.034351', 'confId': 'default'}
nutch.py: POST Request headers: {'Accept': 'application/json'}
nutch.py: Response headers: {'Date': 'Wed, 28 Oct 2015 17:18:54 GMT',
'Content-Length': '0', 'Server': 'Jetty(8.1.15.v20140411)'}
nutch.py: Response status: 500
nutch log:
java.lang.NullPointerException
at org.apache.nutch.crawl.CrawlDbReader.query(CrawlDbReader.java:747)
at
org.apache.nutch.service.resources.DbResource.crawlDbStats(DbResource.java:95)
at
org.apache.nutch.service.resources.DbResource.readdb(DbResource.java:52)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at
org.apache.cxf.service.invoker.AbstractInvoker.performInvocation(AbstractInvoker.java:181)
at
org.apache.cxf.service.invoker.AbstractInvoker.invoke(AbstractInvoker.java:97)
at org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:200)
at org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:99)
at
org.apache.cxf.interceptor.ServiceInvokerInterceptor$1.run(ServiceInvokerInterceptor.java:59)
at
org.apache.cxf.interceptor.ServiceInvokerInterceptor.handleMessage(ServiceInvokerInterceptor.java:96)
at
org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:307)
at
org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:121)
at
org.apache.cxf.transport.http.AbstractHTTPDestination.invoke(AbstractHTTPDestination.java:251)
at
org.apache.cxf.transport.http_jetty.JettyHTTPDestination.doService(JettyHTTPDestination.java:261)
at
org.apache.cxf.transport.http_jetty.JettyHTTPHandler.handle(JettyHTTPHandler.java:70)
at
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1088)
at
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1024)
at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
at
org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:255)
at
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
at org.eclipse.jetty.server.Server.handle(Server.java:370)
at
org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:494)
at
org.eclipse.jetty.server.AbstractHttpConnection.content(AbstractHttpConnection.java:982)
at
org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.content(AbstractHttpConnection.java:1043)
at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:865)
at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:240)
at
org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82)
at
org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:696)
at
org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:53)
at
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
at
org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
at java.lang.Thread.run(Thread.java:745)
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