Konstantin Shvachko created HDFS-14734:
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Summary: [FGL] Introduce Latch Lock to replace Namesystem global
lock.
Key: HDFS-14734
URL: https://issues.apache.org/jira/browse/HDFS-14734
Project: Hadoop HDFS
Issue Type: Sub-task
Components: namenode
Reporter: Konstantin Shvachko
The concept of Latch Lock associates a separate lock with each partition of
PartitionedGSet.
Define the order of acquiring locks on the partitions. Some operations will
require holding locks on multiple partitions.
It is preferable to retain the global lock for some operations, such as rename.
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