Wei-Chiu Chuang created HDFS-12245:
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Summary: Update INodeId javadoc
Key: HDFS-12245
URL: https://issues.apache.org/jira/browse/HDFS-12245
Project: Hadoop HDFS
Issue Type: Bug
Components: namenode
Reporter: Wei-Chiu Chuang
The INodeId javadoc states that id 1 to 1000 is reserved and root inode id
start from 1001. That is no longer true after HDFS-4434.
Also, it's a little weird in INodeId
{code}
public static final long LAST_RESERVED_ID = 2 << 14 - 1;
public static final long ROOT_INODE_ID = LAST_RESERVED_ID + 1;
{code}
It seems the intent was for LAST_RESERVED_ID to be (2^14) - 1 = 32767. But due
to Java operator precedence, LAST_RESERVED_ID = 2^(14-1) = 16384. Maybe it
doesn't matter, not sure.
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