[HADOOP-13346] DelegationTokenAuthenticationHandler writes via closed writer

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 3.0.0-alpha2
• Component/s: security
• Hadoop Flags: Reviewed
• Assignee: Hrishikesh Gadre
• Reporter: Gregory Chanan
• Created: 07/Jul/16 00:17
• Updated: 23/Feb/19 15:09
• Resolved: 09/Nov/16 17:36

Description

By default, jackson's ObjectMapper closes the writer after writing, so in the following code

ObjectMapper jsonMapper = new ObjectMapper();
jsonMapper.writeValue(writer, map);
writer.write(ENTER);

(https://github.com/apache/hadoop/blob/8a9d293dd60f6d51e1574e412d40746ba8175fe1/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/token/delegation/web/DelegationTokenAuthenticationHandler.java#L280-L282)

writer.write actually writes to a closed stream. This doesn't seem to cause a problem with the version of jetty that hadoop uses (those just ignore closes), but causes problems on later verisons of jetty – I hit this on jetty 8 while implementing SOLR-9200.

Issue Links

• is related to: SOLR-9762 Remove the workaround implemented for HADOOP-13346