PI81394: CLEARMAKE MAY STALL WITH A "DEFUNCT" CHILD PROCESS DURING BUILDSON LINUX

Rational ClearCase Fix Pack 5 (9.0.0.5) for 9.0
Rational ClearCase Fix Pack 1 (9.0.1.1) for 9.0.1
Rational ClearCase Fix Pack 6 (9.0.0.6) for 9.0
Rational ClearCase Fix Pack 2 (9.0.1.2) for 9.0.1
Rational ClearCase Fix Pack 3 (9.0.1.3) for 9.0.1
Rational ClearCase Fix Pack 4 (9.0.1.4) for 9.0.1
Rational ClearCase Fix Pack 5 (9.0.1.5) for 9.0.1
Rational ClearCase Fix Pack 6 (9.0.1.6) for 9.0.1
Rational ClearCase Fix Pack 7 (9.0.1.7) for 9.0.1
Rational ClearCase Fix Pack 8 (9.0.1.8) for 9.0.1
Rational ClearCase Fix Pack 9 (9.0.1.9) for 9.0.1
Rational ClearCase Fix Pack 10 (9.0.1.10) for 9.0.1
Rational ClearCase Fix Pack 11 (9.0.1.11) for 9.0.1
Rational ClearCase Fix Pack 12 (9.0.1.12) for 9.0.1
Rational ClearCase Fix Pack 13 (9.0.1.13) for 9.0.1

APAR status

• Closed as program error.

Error description

• When performing builds using clearmake on a IBM Rational
  ClearCase Linux host, builds have been observed to stall in some
  environments.
  
  Investigation has revealed that it is possible for clearmake to
  a child process termination event. When this happens, it does
  not reap the child process (rendering it "defunct"), and will
  wait indefinitely.
  

Local fix

• The apparently most effective method to limit the issue is to
  set CCASE_SHELL_REQUIRED to any value, which forces all child
  processes to execute in their own subshell instead of being
  executed directly by clearmake. This seems to limit, but not
  eliminate the issue.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * Users of ClearCase clearmake.                                *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * When performing builds using clearmake on a ClearCase Linux  *
  * host, builds have been observed to stall in some             *
  * environments.                                                *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  

Problem conclusion

• A fix is available in ClearCase versions 9.0.0.5 and 9.0.1.1
  

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

  CC&CC MSITE WIN

• Fixed component ID

  5724G3300

Applicable component levels

• R900 PSY

     UP

• R901 PSY

     UP