[HDFS-16738] Invalid CallerContext caused NullPointerException

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 3.4.0
• Fix Version/s: 3.4.0
• Component/s: namenode
• Labels: pull-request-available
• Target Version/s: 3.4.0
• Hadoop Flags: Reviewed
• Assignee: ZanderXu
• Reporter: ZanderXu
• Created: 23/Aug/22 04:04
• Updated: 16/Oct/24 18:29
• Resolved: 25/Aug/22 09:13

Description

2022-08-23 11:58:03,258 [FSEditLogAsync] ERROR namenode.FSEditLog (JournalSet.java:mapJournalsAndReportErrors(398)) - Error: write op failed for required journal (JournalAndStream(mgr=QJM to [127.0.0.1:55779, 127.0.0.1:55781, 127.0.0.1:55783], stream=QuorumOutputStream starting at txid 1))
java.lang.NullPointerException
	at org.apache.hadoop.io.UTF8.set(UTF8.java:97)
	at org.apache.hadoop.hdfs.server.namenode.FSImageSerialization.writeString(FSImageSerialization.java:361)
	at org.apache.hadoop.hdfs.server.namenode.FSEditLogOp$AddCloseOp.writeFields(FSEditLogOp.java:586)
	at org.apache.hadoop.hdfs.server.namenode.FSEditLogOp$Writer.writeOp(FSEditLogOp.java:4986)
	at org.apache.hadoop.hdfs.server.namenode.EditsDoubleBuffer$TxnBuffer.writeOp(EditsDoubleBuffer.java:158)
	at org.apache.hadoop.hdfs.server.namenode.EditsDoubleBuffer.writeOp(EditsDoubleBuffer.java:61)
	at org.apache.hadoop.hdfs.qjournal.client.QuorumOutputStream.write(QuorumOutputStream.java:50)
	at org.apache.hadoop.hdfs.server.namenode.JournalSet$JournalSetOutputStream$1.apply(JournalSet.java:462)
	at org.apache.hadoop.hdfs.server.namenode.JournalSet.mapJournalsAndReportErrors(JournalSet.java:393)
	at org.apache.hadoop.hdfs.server.namenode.JournalSet.access$200(JournalSet.java:56)
	at org.apache.hadoop.hdfs.server.namenode.JournalSet$JournalSetOutputStream.write(JournalSet.java:458)
	at org.apache.hadoop.hdfs.server.namenode.FSEditLog.doEditTransaction(FSEditLog.java:496)
	at org.apache.hadoop.hdfs.server.namenode.FSEditLogAsync$Edit.logEdit(FSEditLogAsync.java:311)
	at org.apache.hadoop.hdfs.server.namenode.FSEditLogAsync.run(FSEditLogAsync.java:253)
	at java.lang.Thread.run(Thread.java:748)

Issue Links

• is caused by: HDFS-15079 RBF: Client maybe get an unexpected result with network anomaly
• links to: GitHub Pull Request #4791