Stephen O'Donnell created HDFS-15283:
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Summary: Cache pool MAXTTL is not persisted and restored on
cluster restart
Key: HDFS-15283
URL: https://issues.apache.org/jira/browse/HDFS-15283
Project: Hadoop HDFS
Issue Type: Bug
Components: namenode
Affects Versions: 3.4.0
Reporter: Stephen O'Donnell
Assignee: Stephen O'Donnell
The cache pool "getMaxRelativeExpiryMs" is never persisted to or read from the
FSImage. This means that if a MAXTTL is set on a pool, it will not persist
beyond a cluster restart.
>From the protobuf definition, there is an existing field to store it:
{code}
message CachePoolInfoProto {
optional string poolName = 1;
optional string ownerName = 2;
optional string groupName = 3;
optional int32 mode = 4;
optional int64 limit = 5;
optional int64 maxRelativeExpiry = 6; <-- NEVER SET
optional uint32 defaultReplication = 7 [default=1];
}
{code}
But this is never set in the CacheManager.saveState() or read in
CacheManager.loadState().
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