Attila Doroszlai created HDDS-8715:
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Summary: Hadoop RPC server creation renames current thread
Key: HDDS-8715
URL: https://issues.apache.org/jira/browse/HDDS-8715
Project: Apache Ozone
Issue Type: Task
Reporter: Attila Doroszlai
Assignee: Attila Doroszlai
HDFS-13566 added code in IPC {{Listener}} to rename the current thread:
{code:title=https://github.com/apache/hadoop/blob/c2385c021bafc521ca6c8c8037351192a97c126c/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/Server.java#L1276-L1288}
Listener(int port) throws IOException {
address = new InetSocketAddress(bindAddress, port);
// Create a new server socket and set to non blocking mode
acceptChannel = ServerSocketChannel.open();
acceptChannel.configureBlocking(false);
acceptChannel.setOption(StandardSocketOptions.SO_REUSEADDR, reuseAddr);
// Bind the server socket to the local host and port
bind(acceptChannel.socket(), address, backlogLength, conf,
portRangeConfig);
//Could be an ephemeral port
this.listenPort = acceptChannel.socket().getLocalPort();
Thread.currentThread().setName("Listener at " +
bindAddress + "/" + this.listenPort);
{code}
{{Listener}} is a {{Thread}} object, being created in an another thread. The
result is that the other thread (usually the {{main}} thread) is renamed to
{{Listener at ...}}.
This has been fixed by HADOOP-18433, but only for Hadoop 3.4.0. Currently
being backported to 3.3 line.
The goal of this task is to work around this bug in Ozone until we can upgrade
to a Hadoop release with the fix.
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