Takanobu Asanuma created HDFS-14037:
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Summary: Fix SSLFactory truststore reloader thread leak in
URLConnectionFactory
Key: HDFS-14037
URL: https://issues.apache.org/jira/browse/HDFS-14037
Project: Hadoop HDFS
Issue Type: Bug
Components: hdfs-client, webhdfs
Reporter: Takanobu Asanuma
Assignee: Takanobu Asanuma
This is reported by [~yoshiata]. It is a similar issue as HADOOP-11368 and
YARN-5309 in URLConnectionFactory.
{quote}SSLFactory in newSslConnConfigurator and subsequently creates the
ReloadingX509TrustManager instance which in turn starts a trust store reloader
thread.
However, the SSLFactory is never destroyed and hence the trust store reloader
threads are not killed.
{quote}
We observed many leaked threads when we used swebhdfs via NiFi cluster.
{noformat}
"Truststore reloader thread" Id=221 TIMED_WAITING on null
at java.lang.Thread.sleep(Native Method)
at
org.apache.hadoop.security.ssl.ReloadingX509TrustManager.run(ReloadingX509TrustManager.java:189)
at java.lang.Thread.run(Thread.java:748)
{noformat}
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