> Second, a followup question: So the row keys will be deleted after 1) the GC
> grace period expires, and 2) I do a compaction?
Automatic compaction will purge the tombstones.
> Third: Assuming the answer is yes, is there any way to manually force GC of
> the deleted keys without doing the ful
Hi,
When concurrent compactors are set to more then 1, it's rare when more than 1
compaction is running in parallel.
Didn't checked the source code, but it looks like when next compaction task
(any of minor, major, or cleanup) is for the same CF, it will not start in
parallel and next tasks ar
If you want to try any others UI to browse your Cassandra data I can
suggest you 2 :
- https://github.com/sebgiroux/Cassandra-Cluster-Admin
- http://code.google.com/p/cassui/
The first one is built to be a phpMyAdmin Like.
Alain
2012/1/31 Brandon Williams
> On Sun, Jan 29, 2012 at 11:52 PM, E
I have a cluster with seven nodes.
If I run the node-tool ring command on all nodes, I see the following:
Node1 says that node2 is down.
Node 2 says that node1 is down.
All other nodes say that everyone is up.
Is this normal behavior?
I see no network related problems. Also no problems between
I just solved it.
It was my mistake with using ByteBuffer.. the array() method returns the
entire array without considering the index offset into the array.
It works using
String rowName =
Charset.forName(UTF_8).decode(entry.getKey()).toString();
Ross
On 1 February 2012 22:42, Ross Black wr
On Wed, Feb 1, 2012 at 5:50 AM, Tamil selvan R.S wrote:
> Where to follow the progress of Cassandra CQL development progress and
> release schedule?
We don't have a formal roadmap for this I'm afraid. Your best bet is
to search the issue tracker for CQL tickets, and follow the list.
At the mom
(Assuming 1.0* release)
From the comments in cassandra.yaml
# Number of simultaneous compactions to allow, NOT including
# validation "compactions" for anti-entropy repair. Simultaneous
# compactions can help preserve read performance in a mixed read/write
# workload, by mitigating the tendency o
We are using Cassandra 0.8.7 and building a multi-tenant cassandra platform
where we have a common KS and common CFs for all tenants. By using Hector's
virtual keyspaces, we are able to add modify rowkeys to have a tenant
specific id. (Note that we do not allow tenants to modify/create KS/CF. We
ju
Without knowing too much more information I would try this…
* Restart node each node in turn, watch the logs to see what it says about the
other.
* If that restart did not fix it, try using the
Dcassandra.load_ring_state=false JVM option when starting the node. That will
tell it to ignore it'
how does read repair work in the following scenario?
i have RF=3, my row/column lives on 3 nodes right? if (for some reason,
eg a timed-out write at quorum) node 1 has a 'new' version of the
row/column (eg clock = 10), but node 2 and 3 have 'old' versions (clock
= 5), when i try to read my ro
> i have RF=3, my row/column lives on 3 nodes right? if (for some reason, eg
> a timed-out write at quorum) node 1 has a 'new' version of the row/column
> (eg clock = 10), but node 2 and 3 have 'old' versions (clock = 5), when i
> try to read my row/column at quorum, what do i get back?
You eithe
Peter Schuller wrote:
>> i have RF=3, my row/column lives on 3 nodes right? if (for some reason, eg
>> a timed-out write at quorum) node 1 has a 'new' version of the row/column
>> (eg clock = 10), but node 2 and 3 have 'old' versions (clock = 5), when i
>> try to read my row/column at quorum,
Hi,
We need clone the data between 2 clusters. These 2 clusters have different
number of nodes.
source: 6 nodes, RF5
destination: 3 nodes, RF3
Cassandra version is 0.8.1.
Is there any suggestion on how to do this?
--
Thanks,
Hefeng
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