Lisheng Sun created HDFS-14942:
----------------------------------
Summary: Change Log Level to warn in
JournalNodeSyncer#syncWithJournalAtIndex
Key: HDFS-14942
URL: https://issues.apache.org/jira/browse/HDFS-14942
Project: Hadoop HDFS
Issue Type: Improvement
Environment: when hadoop 2.x upgrades to hadoop 3.x,
InterQJournalProtocol is newly added，so throw Unknown protocol.
the newly InterQJournalProtocol is used to sychronize past log segments to JNs
that missed them. And when an error occurs does not affect normal service. I
think it should not be a ERROR log，and that log a warn log is more reasonable.
{code:java}
private void syncWithJournalAtIndex(int index) {
...
GetEditLogManifestResponseProto editLogManifest;
try {
editLogManifest = jnProxy.getEditLogManifestFromJournal(jid,
nameServiceId, 0, false);
} catch (IOException e) {
LOG.error("Could not sync with Journal at " +
otherJNProxies.get(journalNodeIndexForSync), e);
return;
}
{code}
{code:java}
2019-10-30,15:11:17,388 ERROR
org.apache.hadoop.hdfs.qjournal.server.JournalNodeSyncer: Could not sync with
Journal at mos1-hadoop-prc-ct17.ksru/10.85.3.59:111002019-10-30,15:11:17,388
ERROR org.apache.hadoop.hdfs.qjournal.server.JournalNodeSyncer: Could not sync
with Journal at
mos1-hadoop-prc-ct17.ksru/10.85.3.59:11100org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.security.authorize.AuthorizationException):
Unknown protocol:
org.apache.hadoop.hdfs.qjournal.protocol.InterQJournalProtocol at
org.apache.hadoop.ipc.Client.getRpcResponse(Client.java:1565) at
org.apache.hadoop.ipc.Client.call(Client.java:1511) at
org.apache.hadoop.ipc.Client.call(Client.java:1421) at
org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:228)
at
org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:116)
at com.sun.proxy.$Proxy16.getEditLogManifestFromJournal(Unknown Source) at
org.apache.hadoop.hdfs.qjournal.protocolPB.InterQJournalProtocolTranslatorPB.getEditLogManifestFromJournal(InterQJournalProtocolTranslatorPB.java:75)
at
org.apache.hadoop.hdfs.qjournal.server.JournalNodeSyncer.syncWithJournalAtIndex(JournalNodeSyncer.java:250)
at
org.apache.hadoop.hdfs.qjournal.server.JournalNodeSyncer.syncJournals(JournalNodeSyncer.java:226)
at
org.apache.hadoop.hdfs.qjournal.server.JournalNodeSyncer.lambda$startSyncJournalsDaemon$0(JournalNodeSyncer.java:186)
at java.lang.Thread.run(Thread.java:748)
{code}
Reporter: Lisheng Sun
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