Timo Walter created HDFS-14158:
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Summary: Checkpointer always triggers after 5 minutes
Key: HDFS-14158
URL: https://issues.apache.org/jira/browse/HDFS-14158
Project: Hadoop HDFS
Issue Type: Bug
Components: namenode
Affects Versions: 2.8.1
Reporter: Timo Walter
The checkpointer always triggers a checkpoint every 5 minutes and ignores the
flag "*dfs.namenode.checkpoint.period*"
See the code below (in Checkpointer.java):
{code:java}
//Main work loop of the Checkpointer
public void run() {
// Check the size of the edit log once every 5 minutes.
long periodMSec = 5 * 60; // 5 minutes
if(checkpointConf.getPeriod() < periodMSec) {
periodMSec = checkpointConf.getPeriod();
}
{code}
If the configured period ("*dfs.namenode.checkpoint.period*") is lower than 5
minutes, you choose use the configured one. But it always ignores it, if it's
greater than 5 minutes.
In my opinion, the if-expression should be:
{code:java}
if(checkpointConf.getPeriod() > periodMSec) {
periodMSec = checkpointConf.getPeriod();
}
{code}
Then "*dfs.namenode.checkpoint.period*" won't get ignored.
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