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HADOOP-11780. Prevent IPC reader thread death. Contributed by Daryn Sharp. 

(cherry picked from commit e19b37ead2)
This commit is contained in:
Kihwal Lee 2016-09-28 10:03:24 -05:00
parent 5f754e8638
commit 7091753bd2
1 changed files with 22 additions and 3 deletions
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25
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/Server.java
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@ -109,6 +109,7 @@ import org.apache.hadoop.security.authorize.ServiceAuthorizationManager;
import org.apache.hadoop.security.token.SecretManager;
import org.apache.hadoop.security.token.SecretManager.InvalidToken;
import org.apache.hadoop.security.token.TokenIdentifier;
import org.apache.hadoop.util.ExitUtil;
import org.apache.hadoop.util.ProtoUtil;
import org.apache.hadoop.util.StringUtils;
import org.apache.hadoop.util.Time;
@ -955,10 +956,16 @@ public abstract class Server {
while (iter.hasNext()) {
key = iter.next();
iter.remove();
if (key.isValid()) {
try {
if (key.isReadable()) {
doRead(key);
}
} catch (CancelledKeyException cke) {
// something else closed the connection, ex. responder or
// the listener doing an idle scan. ignore it and let them
// clean up.
LOG.info(Thread.currentThread().getName() +
": connection aborted from " + key.attachment());
}
key = null;
}
@ -968,6 +975,9 @@ public abstract class Server {
}
} catch (IOException ex) {
LOG.error("Error in Reader", ex);
} catch (Throwable re) {
LOG.fatal("Bug in read selector!", re);
ExitUtil.terminate(1, "Bug in read selector!");
}
}
}
@ -1186,8 +1196,17 @@ public abstract class Server {
SelectionKey key = iter.next();
iter.remove();
try {
if (key.isValid() && key.isWritable()) {
doAsyncWrite(key);
if (key.isWritable()) {
doAsyncWrite(key);
}
} catch (CancelledKeyException cke) {
// something else closed the connection, ex. reader or the
// listener doing an idle scan. ignore it and let them clean
// up
RpcCall call = (RpcCall)key.attachment();
if (call != null) {
LOG.info(Thread.currentThread().getName() +
": connection aborted from " + call.connection);
}
} catch (IOException e) {
LOG.info(Thread.currentThread().getName() + ": doAsyncWrite threw exception " + e);