When the checkpointing starts, the primary namenode starts a new edits file. During the checkpointing process will the namenode go into safe mode? According to the Hadoop - The Definitive Guide
> The schedule for checkpointing is controlled by two configuration parameters. The secondary namenode checkpoints every hour (fs.checkpoint.period in seconds) or sooner if the edit log has reached 64 MB (fs.checkpoint.size in bytes), which it checks every five minutes. Regards, Praveen
