With just 1 block on the HDFS cluster, NN exits safemode on startup immediately.
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Key: HDFS-2311
URL: https://issues.apache.org/jira/browse/HDFS-2311
Project: Hadoop HDFS
Issue Type: Bug
Components: name-node
Affects Versions: 0.20.203.0
Reporter: Harsh J
Priority: Minor
This is cause:
(int) ((1 Block) * (0.999f Threshold Default Pct)) == 0, in which case
SafeModeInfo's checks of modes makes an simple, direct exit of the safemode.
Faulty code is possibly in FSNamesystem#setBlockTotal. This is a non major
issue since with 2 blocks it would work fine, and will work fine with 1.0f
Threshold Pct too.
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