remote api GAE/J: StackOverflowError?

StackOverflow https://stackoverflow.com/questions/8140671

  •  01-03-2021
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Question

I'm trying to query the datastore of one of my GAE/J application from another GAE/J app but I got this error using development server and also in production

Error for /servlet_url 

   java.lang.StackOverflowError 
        at java.lang.ThreadLocal$ThreadLocalMap.getEntry(ThreadLocal.java:381) 
        at java.lang.ThreadLocal$ThreadLocalMap.access$000(ThreadLocal.java:261) 
        at java.lang.ThreadLocal.get(ThreadLocal.java:146) 
        at com.google.appengine.tools.remoteapi.ThreadLocalDelegate.getDelegate(Thread LocalDelegate.java:32) 
        at com.google.appengine.tools.remoteapi.ThreadLocalDelegate.makeSyncCall(Threa dLocalDelegate.java:41) 
        at com.google.appengine.tools.remoteapi.HostedRemoteApiDelegate.makeSyncCall(H ostedRemoteApiDelegate.java:45) 
        at com.google.appengine.tools.remoteapi.ThreadLocalDelegate.makeSyncCall(Threa dLocalDelegate.java:41) 
        at com.google.appengine.tools.remoteapi.HostedRemoteApiDelegate.makeSyncCall(H ostedRemoteApiDelegate.java:45) 
        at com.google.appengine.tools.remoteapi.ThreadLocalDelegate.makeSyncCall(Threa dLocalDelegate.java:41) 
        at com.google.appengine.tools.remoteapi.HostedRemoteApiDelegate.makeSyncCall(H ostedRemoteApiDelegate.java:45) 
        at com.google.appengine.tools.remoteapi.ThreadLocalDelegate.makeSyncCall(Threa dLocalDelegate.java:41) 
        at com.google.appengine.tools.remoteapi.HostedRemoteApiDelegate.makeSyncCall(H ostedRemoteApiDelegate.java:45) 
        at com.google.appengine.tools.remoteapi.ThreadLocalDelegate.makeSyncCall(Threa dLocalDelegate.java:41) 
        at com.google.appengine.tools.remoteapi.HostedRemoteApiDelegate.makeSyncCall(H ostedRemoteApiDelegate.java:45) 
        at com.google.appengine.tools.remoteapi.ThreadLocalDelegate.makeSyncCall(Threa dLocalDelegate.java:41) 
        at com.google.appengine.tools.remoteapi.HostedRemoteApiDelegate.makeSyncCall(H ostedRemoteApiDelegate.java:45)

When checking the appstats of the first application after many remote requests, I see several successful queries to /remote_api but with no RPC call

*2011-11-02 23:22:59.298 "GET remote_api" 200 real=0ms cpu=0ms api=0ms overhead=0ms (0 RPCs)*

PS: I followed extatly the steps described here: http://code.google.com/intl/fr-FR/appengine/docs/java/tools/remoteapi.html

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Solution

This is a bug in RemoteAPI: http://code.google.com/p/googleappengine/issues/detail?id=6349

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