JR53177: SEO URL redirect causes an infinite loop and a timeout error occurs

APAR status

• Closed as program error.

Error description

• When SEO URL Keywords are modified, any incoming request for the
  old URL is automatically redirected to the new URL. But when
  the new keywords are exactly same as the old keywords, the
  redirect logic goes into an infinite loop and the thread
  eventually times out.
  
  Trace files will include exceptions similar to the following
  message:
  
  TimeoutManage I   WTRN0124I: When the timeout occurred the
  thread with which the transaction is, or was
  most recently, associated was Thread[WebContainer : 16,5,main].
  
  The stack trace of this thread when the timeout occurred was:
   java.util.Collections.replaceAll(Collections.java:2027)
      at
  com.ibm.commerce.seo.redirect.RedirectEngine.remapURL(RedirectEn
  gine.java:232)
      at
  com.ibm.commerce.seo.redirect.RedirectEngine.getRedirectURL(Redi
  rectEngine.java:97)
  

Local fix

Problem summary

• USERS AFFECTED:
  WebSphere Commerce V7 Feature Pack 6 or later.
  
  
  PROBLEM ABSTRACT:
  SEO URL redirect causes an infinite loop and a timeout error
  occurs
  
  BUSINESS IMPACT:
  CPU runs at high utilization and server response will become
  slow and eventually server goes down. When the server goes down,
   shoppers cannot access the store.
  
  RECOMMENDATION:
  

Problem conclusion

• RedirectEngine.remapURL method was modified to check that the
  new keyword does not equal the old keyword before calling the
  java.util.Collections.replaceAll method:
  
  if (newKeyword != null && !newKeyword.equals(originalKeyword))
  {
  Collections.replaceAll(urlTokens, originalKeyword, newKeyword);
  }
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  WC BUS EDITION

• Fixed component ID

  5724I3800

Applicable component levels

• R700 PSY

     UP