Wei Yan created HDFS-13475:
------------------------------
Summary: RBF: Router always leaves SafeMode after some time even
manually entering SafeMode
Key: HDFS-13475
URL: https://issues.apache.org/jira/browse/HDFS-13475
Project: Hadoop HDFS
Issue Type: Sub-task
Reporter: Wei Yan
Assignee: Wei Yan
To reproduce the issue:
{code:java}
$ bin/hdfs dfsrouteradmin -safemode enter
Successfully enter safe mode.
$ bin/hdfs dfsrouteradmin -safemode get
Safe Mode: true{code}
And then,
{code:java}
$ bin/hdfs dfsrouteradmin -safemode get
Safe Mode: false{code}
>From the code, it looks like the periodicInvoke triggers the leave.
{code:java}
public void periodicInvoke() {
......
// Always update to indicate our cache was updated
if (isCacheStale) {
if (!rpcServer.isInSafeMode()) {
enter();
}
} else if (rpcServer.isInSafeMode()) {
// Cache recently updated, leave safe mode
leave();
}
}
{code}
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