Yongjun Zhang created HDFS-10211:
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Summary: Add more info to DelegationTokenIdentifier#toString for
better supportability
Key: HDFS-10211
URL: https://issues.apache.org/jira/browse/HDFS-10211
Project: Hadoop HDFS
Issue Type: Improvement
Reporter: Yongjun Zhang
Assignee: Yongjun Zhang
Base class {{AbstractDelegationTokenIdentifier}} has the following
implementation of {{toString()}} method
{code}
@Override
public String toString() {
StringBuilder buffer = new StringBuilder();
buffer
.append("owner=" + owner + ", renewer=" + renewer + ", realUser="
+ realUser + ", issueDate=" + issueDate + ", maxDate=" + maxDate
+ ", sequenceNumber=" + sequenceNumber + ", masterKeyId="
+ masterKeyId);
return buffer.toString();
}
{code}
However, derived class
{{org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenIdentifier}}
has the following implementation that overrides the base class above:
{code}
@Override
public String toString() {
return getKind() + " token " + getSequenceNumber()
+ " for " + getUser().getShortUserName();
}
{code}
And when exception is thrown because of token expiration or other reason:
{code}
if (info.getRenewDate() < Time.now()) {
throw new InvalidToken("token (" + identifier.toString() + ") is
expired");
}
{code}
The exception doesn't show the detailed information about the token, like the
base class' toString() method returns.
Creating this jira to change the
{{org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenIdentifier}}
implementation to include all the info about the token, as included by the
base class.
This change would help supportability, at the expense of printing a little more
information to the log. I hope no code really depends on the output string.
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