[HADOOP-13986] UGI.UgiMetrics.renewalFailureTotal is not printable

• Type: Bug
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 2.8.0, 3.0.0-alpha2
• Component/s: security
• Target Version/s: 3.5.0
• Assignee: Unassigned
• Reporter: Wei-Chiu Chuang
• Created: 13/Jan/17 17:21
• Updated: 04/Jan/24 12:01

Description

The metrics (renewalFailures and renewalFailuresTotal) in the following code snippet are not printable.

UserGroupInformation.java

metrics.renewalFailuresTotal.incr();
final long tgtEndTime = tgt.getEndTime().getTime();
LOG.warn("Exception encountered while running the renewal "
        + "command for {}. (TGT end time:{}, renewalFailures: {},"
        + "renewalFailuresTotal: {})", getUserName(), tgtEndTime,
    metrics.renewalFailures, metrics.renewalFailuresTotal, ie);

The output of the code is like the following:

2017-01-12 12:23:14,062 WARN security.UserGroupInformation (UserGroupInformation.java:run(1012)) - Exception encountered while running the renewal command for [e-mail]. (TGT end time:1484252600000, renewalFailures: org.apache.hadoop.metrics2.lib.MutableGaugeInt@323aa7f9,renewalFailuresTotal: org.apache.hadoop.metrics2.lib.MutableGaugeLong@c8af058)
ExitCodeException exitCode=1: kinit: krb5_cc_get_principal: No credentials cache file found

Issue Links

• breaks: HADOOP-13590 Retry until TGT expires even if the UGI renewal thread encountered exception