Kiran Kumar Maturi created HADOOP-17729:
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Summary: Datanode client is stuck, waiting for connections map to
be empty
Key: HADOOP-17729
URL: https://issues.apache.org/jira/browse/HADOOP-17729
Project: Hadoop Common
Issue Type: Bug
Affects Versions: 2.10.1
Reporter: Kiran Kumar Maturi
In our cluster we have observed when close command is issued to Datanode, It is
stuck indefinitely waiting for connections map to be empty.
{code:java}
for (Connection conn : connections.values()) {
conn.interrupt();
conn.interruptConnectingThread();
}
// wait until all connections are closed
while (!connections.isEmpty()) {
try {
Thread.sleep(STOP_SLEEP_TIME_MS);
} catch (InterruptedException e) {
}
}
{code}
[code
link|https://github.com/apache/hadoop/blob/branch-2.10.1/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/Client.java#L1360]
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