PM61036: [wi 64593] Duplicate temp folders created by RAM sessions

Rational Asset Manager Fix Pack 2 (7.5.1.2) for 7.5.1

APAR status

• Closed as program error.

Error description

• Each RAMSession object creates its own temp folder location by
  java.io.tmpdir'}/local_ram_store/RAMSession_{this.hashCode()}.
  But the session.hashcode() could be ducplicated even on
  different session objects which causing IO poblems such as:
  org.eclipse.emf.ecore.resource.impl.
  
  ResourceSetImpl$1DiagnosticWrappedException: java.io.
  
  FileNotFoundException: /home/emapbld/emap-
  
  bootstrap/tmp/ramclient/local_ram_store/com_ibm_ram_client_RAMSe
  ssion_12
  c384b/schemas/https___assetmgr_apps_anz_ram_/assetTypesSchema.xm
  i
  (No
  such file or directory)
  
  OR
  
  
  
   Write access not provided for ramclient temporary cache
  directory
  /home/emapbld/emap-bootstrap/tmp/ramclient  Exception:
  exceptions.
  Exception Write access not provided for ramclient temporary
  cache
  directory /home/emapbld/emap-bootstrap/tmp/ramclient
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
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  * PROBLEM DESCRIPTION:                                         *
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  * RECOMMENDATION:                                              *
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  Problem description and statement
      Customer is using RAM ramclient Java API to do a
  download from RAM.
      However, when multiple processes are invoked
  simultaneously, some downloads fail at random with errors as
  below.
  
  
  org.eclipse.emf.ecore.resource.impl.ResourceSetImpl$1Diagnos
  ticWrappedException: java.io.FileNotFoundException:
  
  /home/emapbld/emap-bootstrap/tmp/ramclient/local_ram_store/c
  om_ibm_ram_client_RAMSession_12c384b/schemas/https___assetmg
  r_apps_anz_ram_/assetTypesSchema.xmi (No such file or
  directory)
  
  OR
  
  Write access not provided for ramclient temporary cache
  directory
  /home/emapbld/emap-bootstrap/tmp/ramclient  Exception:
  exceptions.
  Exception Write access not provided for ramclient temporary
  cache directory /home/emapbld/emap-bootstrap/tmp/ramclient
  
    Running multiple processes simultaneously means there are
  multiple UNIX processes, running by the same user id, each
  has a
    single thread.(in bash pseudo code)
  
    For example,
  
    java - jar download.jar asset1 1.0 ?
    java - jar download.jar download asset2 2.3 ?
    wait
  
    where download.jar is calling the Java API.
  
  
  Each RAMSession object creates its own temp folder location
  by
  java.io.tmpdir"}/local_ram_store/RAMSession_{this.hashCode()
  }. But the session.hashcode() could be ducplicated even on
  different session objects which causing IO poblems such as:
  org.eclipse.emf.ecore.resource.impl.
  
  ResourceSetImpl$1DiagnosticWrappedException: java.io.
  
  FileNotFoundException: /home/emapbld/emap-
  
  bootstrap/tmp/ramclient/local_ram_store/com_ibm_ram_client_R
  AMSession_12
  c384b/schemas/https___assetmgr_apps_anz_ram_/assetTypesSchem
  a.xmi (No
  such file or directory)
  
  OR
  
  
  
  Write access not provided for ramclient temporary cache
  directory
  /home/emapbld/emap-bootstrap/tmp/ramclient  Exception:
  exceptions.
  Exception Write access not provided for ramclient temporary
  cache
  directory /home/emapbld/emap-bootstrap/tmp/ramclient
  

Problem conclusion

• This defect has been fixed in Defect 73280.
  according to Ary's testing between using RandomUUID,
  systemtime and Random number, the result turn out to be that
  Systemtime has the least cost, so we decide to use
  systemtime to avoid duplicate in temp folder.
  

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

  RATL ASSET MGR

• Fixed component ID

  5724R4200

Applicable component levels

• R750 PSN

     UP