On 01/14/2010 11:11 PM, Pete Zaitcev wrote:
Make the cell configurable. Among other things we need this for is
that you cannot migrate a tabled over when DB format changes, short
of running 2 CLDs.
We also add a few thoughts to the documentation, prompted by re-reading
of the document while adding the clause for<Cell>.
Signed-Off-By: Pete Zaitcev<zaitcev@xxxxxxxxxx>
---
doc/etc.tabled.conf | 7 +++++++
doc/setup.txt | 40 +++++++++++++++++++++++++++++++++++++---
server/cldu.c | 4 ++++
server/config.c | 11 +++++++++++
server/server.c | 2 +-
server/tabled.h | 1 +
6 files changed, 61 insertions(+), 4 deletions(-)
Strictly speaking, this is wrong, but I applied so that we may make
forward progress.
The definition of a "cell" (or "cel") is everything within a single CLD
namespace.
It is a design requirement that any number of separate tabled instances
may be run within a single cell. The differentiating factor is
pathname. Thus, one tabled instance may store files in
cld://cld.mysite.com/table1/
and a totally separate, parallel instance of table may store its files in
cld://cld.mysite.com/table2/
Provisioning another tabled instance should be as simple as creating a
new directory in CLD, and running the tabled/chunkd nodes.
Thus, the user interface should be CLD hostname + pathname, not "cell name."
Jeff
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