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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
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
Clients can assess one "weed filer" via HTTP, create files via HTTP POST,