You will only have tombstones in your data if you issue deletes.
What you are seeing is an artifact of the fundamental way Cassandra stores
data. Once data is written to disk it is never modified. If you overwrite a
column value that has already been committed to disk the old value is not
I'am using Cassandra 0.7.7 and have a question about hinted handoff.
I have a cluster of three nodes.
I stop node 3.
I see that the hint count for node 3 increases on node 1 (countPendingHints =
28709).
However, when I start node 3 again, I cannot see anything in the log regarding
hinted
Check that node 1 sees node 3 as UP (via ring).
Check the tpstats on node 1, is there an active HH task ?
Take another crawl through the logs.
Cheers
-
Aaron Morton
Freelance Cassandra Developer
@aaronmorton
http://www.thelastpickle.com
On 6/10/2011, at 10:35 PM, Rene Kochen
Node 3 is up (using ring on node 1).
There is no HH task (active = 0, pending = 0, completed = 0, blocked = 0).
This is the log from node 1 when nodes 3 starts:
2011-10-06 12:36:54,985 INFO 12:36:54,985 Node /172.16.108.19 has restarted,
now UP again
2011-10-06 12:36:54,985DEBUG 12:36:54,985
Hi guys,
We're currently testing an application against a very high load, which
runs against Cassandra 0.6.13 (I know, we just never got the time to
upgrade).
The nature of our app is that it will write to two different
SuperColumnFamilies in bursts, and to some other columnfamilies less
On Thu, Oct 6, 2011 at 10:09 AM, Stefan Reek ste...@unitedgames.com wrote:
I can see that during the times the writing gets slow there are ~3000
pending tasks, but they disappear quickly.
Your best bet is to make the write load more constant and less bursty.
If you really do need to handle
On 10/06/2011 05:26 PM, Jonathan Ellis wrote:
On Thu, Oct 6, 2011 at 10:09 AM, Stefan Reekste...@unitedgames.com wrote:
I can see that during the times the writing gets slow there are ~3000
pending tasks, but they disappear quickly.
Your best bet is to make the write load more
On Thu, Oct 6, 2011 at 10:53 AM, Stefan Reek ste...@unitedgames.com wrote:
We do have the commitlogs on separate devices, are there any other basics
that I could have forgotten, or
any parameters that are important for write performance?
1.0 write performance is something like 30% better... I
Lets assume I perform frequent insert update on a column family..
Over a period of time multiple sstables will have this row/column
data.
I have 2 questions about how reads work in cassandra w.r.t. multiple SS tables.
-If you perform a query for a specific row key and a column name, does
it read
I was hoping someone could share their opinions on the following CF designs or
suggest a better way of doing it.
My app is constantly receiving new data that contains URLs. I was
thinking of hashing this URL to form a key. The data is a JSON object with
several properties. For now many of its
I've got the 1.0 rc2 binaries, but it looks like somebody forgot to include the
Apache Daemon in the zip. According to the batch file there should be a
bin\daemon directory, with a prunsrv executable in there.
Cheers,
Steve
It looks like it's missing from the binary distribution. If you download the
source distribution it will be present. I'll see if I can get it included in
the source build.
Ben
On Thu, Oct 6, 2011 at 2:07 PM, Stephen Pope stephen.p...@quest.com wrote:
I’ve got the 1.0 rc2 binaries, but it
At debug level you should see some log messages such as…
Checking remote schema before delivering hints…
Sleeping {}ms to stagger hint delivery…
Endpoint {} died before hint delivery, aborting…
Started hinted handoff for endpoint…
If you want to move on, you can deliver the hints using JMX or
-If you perform a query for a specific row key and a column name, does
it read the most recent SSTable first and if it finds a hit, does it
stop there or does it need to read through all the SStables (to find
most recent one) regardless of whether if found a hit on the most
recent SSTable or
On Thu, Oct 6, 2011 at 3:56 PM, aaron morton aa...@thelastpickle.com wrote:
-If you perform a query for a specific row key and a column name, does
it read the most recent SSTable first and if it finds a hit, does it
stop there or does it need to read through all the SStables (to find
most
The partitioner that comes with Solandra keeps groups of documents together
on the same node. The number of documents that stick together and define a
shard is set by the solandra.maximum.docs.per.shard property.
The shards.at.once property relates to throughput. If you are indexing to
one shard
I'm seeing this error when trying to insert data into a core I've defined in
Solandra
INFO [pool-7-thread-319] 2011-10-06 16:21:34,328 HttpMethodDirector.java (line
445) Retrying request
INFO [pool-7-thread-1070] 2011-10-06 16:21:34,328 HttpMethodDirector.java (line
445) Retrying request
INFO
I'm seeing this in my logs:
WARN [1832199239@qtp-673795938-0] 2011-10-06 16:15:46,424
CassandraIndexManager.java (line 364) invalid shard name encountered:
WDPRO-NGELOG-DEV 1
WDPRO-NGELOG-DEV is the name of the index I'm creating. Is there a restriction
on characters in the name?
very good job!
2011/10/7 Patricio Echagüe patric...@gmail.com
Hi, I wanted to let you all know that Hector client has a website.
http://hector-client.org
There are links to documentation, Javadoc and resources from the community.
If you have a personal blog and want us to include the
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