IT33442: UNEXPLAINED CPU ACTIVITY AFTER AN HTTP TIMEOUT

APAR status

• Closed as program error.

Error description

• If a message flow thread processing a message received through
  an HTTP Input node is terminated without sending an HTTP reply
  from the same thread, and the message being processed this way
  times out, the HTTP Input node may fail to correctly recall the
  HTTP message stored earlier for use during the timeout,
  potentially leading to unexplained CPU activity inhibiting
  shutdown and correct timeout processing.
  
  Additional Symptom(s) Search Keyword(s):
  

Local fix

• NA
  

Problem summary

• ****************************************************************
  USERS AFFECTED:
  IBM App Connect Enterprise V11 users with http flows.
  
  
  Platforms affected:
  MultiPlatform
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  In ACE V11,  HTTPInput node may fail to correctly recall the
  HTTP message for timeout processing, potentially leading to
  unexplained CPU activity inhibiting shutdown and correct time
  out processing.
  
  Thread stack taken at time of failure will show below calls in
  the stack:
  
  <p>ImbStringBase::assignInternal</p><p>Imb::EvHtp::request::getO
  riginalMsgAsBlob</p><p>ImbWSInputNode::MessageLoopContext::handl
  eSingleMessage</p><p>ImbWSInputNode::readQueue
  
  Note: This APAR (<span style="background-color:rgb(255, 255,
  255);color:rgb(34, 34, 34)">IT33442) </span>is a continuation of
  APAR IT32695, as  IT32695 doesn't entirely resolve the problem.
  So the customers who encounter the above issue will have to
  apply both IT32695 and IT33442 to get the issue resolved.</p>
  

Problem conclusion

• The product no longer fails and causes a hang when http timeout
  occurs. This APAR(<span style="background-color:rgb(255, 255,
  255);color:rgb(34, 34, 34)">IT33442) together with </span><span
  style="background-color:rgb(255, 255, 255)">IT32695 </span>
  resolves the problem.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v11.0      11.0.0.10
  
  The latest available maintenance can be obtained from:
  http://www-01.ibm.com/support/docview.wss?rs=849&uid=swg27006041
  
  If the maintenance level is not yet available,information on
  its planned availability can be found on:
  http://www-1.ibm.com/support/docview.wss?rs=849&uid=swg27006308
  ---------------------------------------------------------------
  

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

  APP CONNECT ENT

• Fixed component ID

  5724J0550

Applicable component levels