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Updated Distributed Filer (markdown)

chrislusf 2015-08-06 19:43:52 -07:00
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Distributed-Filer.md

@ -90,6 +90,16 @@ For one file retrieval, the full_filename=>file_id lookup will be O(logN)
using Redis or Cassandra. But very likely the one additional network hop would using Redis or Cassandra. But very likely the one additional network hop would
take longer than the actual lookup. take longer than the actual lookup.
## Deployment Notes
Replication is controlled by the client side. The filer's default replication is "000". To enable it, start filer with similar option like this:
```bash
-defaultReplicaPlacement=001
```
The same setting on master server would not take effect since filer will always use the specified or filer's default replication to write.
## Use Cases ## Use Cases
Clients can assess one "weed filer" via HTTP, create files via HTTP POST, Clients can assess one "weed filer" via HTTP, create files via HTTP POST,