Arpit Agarwal created HDFS-11112:
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Summary: Journal Nodes should refuse to format non-empty
directories
Key: HDFS-11112
URL: https://issues.apache.org/jira/browse/HDFS-11112
Project: Hadoop HDFS
Issue Type: Improvement
Reporter: Arpit Agarwal
Journal Nodes should reject the {{format}} RPC request if a storage directory
is non-empty. The relevant code is in {{JNStorage#format}}.
{code}
void format(NamespaceInfo nsInfo) throws IOException {
setStorageInfo(nsInfo);
...
unlockAll();
sd.clearDirectory();
writeProperties(sd);
createPaxosDir();
analyzeStorage();
{code}
This would make the behavior similar to {{namenode -format -nonInteractive}}.
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