Hey all,
Recently upgraded to 0.8.1 and noticed what seems to be missing data after a
commitlog replay on a single-node cluster. I start the node, insert a bunch
of stuff (~600MB), stop it, and restart it. There are log messages
pertaining to the commitlog replay and no errors, but some of the
Hey all,
We're running a slightly patched version of 0.7.3 on a cluster of 5 nodes.
I've been noticing a number of messages in our logs which look like this
(after a node goes down and comes back up, usually just due to a GC):
2011-06-23 14:46:35,381 INFO [HintedHandoff:1]
: Re: hinted handoff sleeping
On Thu, Jun 23, 2011 at 2:55 PM, Jeffrey Wang jw...@palantir.com wrote:
Hey all,
We’re running a slightly patched version of 0.7.3 on a cluster of 5 nodes.
I’ve been noticing a number of messages in our logs which look like this
(after a node goes “down
Hey all,
We're seeing a strange issue in which two completely separate clusters
(0.7.3) on the same subnet (X.X.X.146 through X.X.X.150) with 3 machines
(146-148) and 2 machines (149-150). Both of them are seeded with the
respective machines in their cluster, yet when we run them they end up
Did you set PIG_RPC_PORT in your hadoop-env.sh? I was seeing this error for a
while before I added that.
-Jeffrey
From: pob [mailto:peterob...@gmail.com]
Sent: Tuesday, April 19, 2011 6:42 PM
To: user@cassandra.apache.org
Subject: Re: pig + hadoop
Hey Aaron,
I read it, and all of 3 env
Hey all,
I've been seeing a very rare issue with schema change conflicts on 0.7.3 (I am
serializing all schema changes to a single Cassandra node and waiting for them
to finish before continuing). Occasionally a node in the cluster will never
report the correct schema, and I think it may have
Done: https://issues.apache.org/jira/browse/CASSANDRA-2490
-Jeffrey
-Original Message-
From: Jonathan Ellis [mailto:jbel...@gmail.com]
Sent: Friday, April 15, 2011 7:39 PM
To: user@cassandra.apache.org
Cc: Jeffrey Wang
Subject: Re: DatabaseDescriptor.defsVersion
I think you found a bug
. The pig model is that you can have huge bags that don't
kill you on memory but they are just slower because they spill to disk. What
is the schema that you impose when you load the data?
On Mar 24, 2011, at 3:57 PM, Jeffrey Wang wrote:
It looks like this functionality is not in the 0.7.3 version
-
From: Jeffrey Wang [mailto:jw...@palantir.com]
Sent: Friday, March 25, 2011 11:42 AM
To: user@cassandra.apache.org
Subject: RE: pig counting question
I don't think it's Pig running out of memory, but rather Cassandra itself (the
data doesn't even make it to Pig). get_range_slices() is called
, like so:
rows = LOAD 'cassandra://Keyspace/ColumnFamily' USING CassandraStorage(4096);
or whatever value you wish.
Give that a try and see if it gives you more of what you're looking for.
On Mar 24, 2011, at 1:16 PM, Jeffrey Wang wrote:
Hey all,
I'm trying to run a very simple Pig script
[mailto:aa...@thelastpickle.com]
Sent: Tuesday, March 15, 2011 1:26 AM
To: user@cassandra.apache.org
Subject: Re: running all unit tests
There is a test target in the build script.
Aron
On 15 Mar 2011, at 17:29, Jeffrey Wang wrote:
Hey all,
We're applying some patches to our own branch of Cassandra
Hey all,
We're applying some patches to our own branch of Cassandra, and we are
wondering if there is a good way to run all the unit tests. Just having JUnit
run all the test classes seems to result in a lot of errors that are hard to
fix, so I'm hoping there's an easy way to do this. Thanks!
Hey all,
I'm trying to get a list of all the rows from a column family using
get_range_slices retrieving no actual columns. I expected this operation to be
pretty quick, but it seems to take a while (5-node 0.7.0 cluster takes 20 min
to page through 60k keys 1000 at a time). It's not
Hey all,
I was wondering if this is the expected behavior of deletes (0.7.0). Let's say
I have a 1-node cluster with a single CF which has gc_grace_seconds = 0. The
following sequence of operations happens (in the given order):
insert row X with timestamp T
delete row X with timestamp T+1
Yup. https://issues.apache.org/jira/browse/CASSANDRA-2305
-Jeffrey
-Original Message-
From: Jonathan Ellis [mailto:jbel...@gmail.com]
Sent: Wednesday, March 09, 2011 6:19 PM
To: user@cassandra.apache.org
Subject: Re: understanding tombstones
On Wed, Mar 9, 2011 at 4:54 PM, Jeffrey Wang
Hi all,
When I drop a column family, it creates a snapshot. When does the snapshot go
away and free up the disk space? I was able to run nodetool clearsnapshot to
get rid of them, but will they go away themselves? (Also, is there a purpose to
keeping a snapshot around?)
-Jeffrey
I just noticed this thread. Does this mean that (assuming the same setup of an
empty keyspace and CFs added later) if I have a CF that I write to for some
time, but not enough to hit the flush limits, it will never get flushed until
the server is restarted? I believe this is causing commit logs
Hey all,
Our setup is 5 machines running Cassandra 0.7.0 with 24GB of heap and 1.5TB
disk each collocated in a DC. We're doing bulk imports from each of the nodes
with RF = 2 and write consistency ANY (write perf is very important). The
behavior we're seeing is this:
- Nodes often
Thanks for the response, but unfortunately a TTL is not enough for us. We would
like to be able to dynamically control the window in case there is an unusually
large amount of data or something so we don't run out of disk space.
One question I have in particular is: if I use the timestamp of my
exactly half of
it or is there stuff that might go on under the covers that makes this not work
as you might expect?
-Jeffrey
-Original Message-
From: Jeffrey Wang [mailto:jw...@palantir.com]
Sent: Thursday, February 03, 2011 3:03 PM
To: user@cassandra.apache.org
Subject: RE: rolling
Hi,
We're trying to use Cassandra 0.7 to store a rolling window of log data (e.g.
last 90 days). We use the timestamp of the log entries as the column names so
we can do time range queries. Everything seems to be working fine, but it's not
clear if there is an efficient way to delete data that
@cassandra.apache.org
Subject: Re: rolling window of data
This project may provide some inspiration for you
https://github.com/thobbs/logsandra
Not sure if it has a rolling window, if you find out let me know :)
Aaron
On 03 Feb, 2011,at 06:08 PM, Jeffrey Wang jw...@palantir.com wrote:
Hi,
We're trying to use
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