Apologies if this is an obvious question, I have looked but not seen too much
(particularly about what exactly "latest version" means when there is no data
on a node for a key - though I'd assume it has to be treated as "unknown" since
you couldn't tell if the data had never been created or the
I have been expermimenting with using hadoop for a map/reduce operation on
cassandra,
outputting to the CqlOutputFormat.class.
I based my first program fairly closely on the famous WordCount example in
examples/hadoop_cql3_word_count
except --- I set my output colfamily to have a bigint primary
Hi,
after upgrading our cluster from 1.1 to 1.2.10 I'm seeing this exception in
system.log (on all nodes):
ERROR [GossipStage:1] 2013-10-08 21:03:41,906 CassandraDaemon.java (line 185)
Exception in thread Thread[GossipStage
:1,5,main]
java.lang.ArrayIndexOutOfBoundsException: 2
at
org.
Hmm, good point. I'll test this out again and see the compaction behavior
is as expected given the relative sizes of the SSTables.
On Tue, Oct 8, 2013 at 3:06 PM, Tyler Hobbs wrote:
> Well, 6 was created by the other sstables being compacted, correct? If
> so, they were probably quite a bit
Hi,
I am trying to use cassandra-cli with client-server encryption enabled. But
somehow getting handshake failure error(given below):
org.apache.thrift.transport.TTransportException:
javax.net.ssl.SSLHandshakeException: Received fatal alert: handshake_failure
at
org.apache.thrift.transport.TIO
Well, 6 was created by the other sstables being compacted, correct? If so,
they were probably quite a bit smaller (~25% of the size). Once you have
two more sstables of roughly that size, they should be compacted
automatically.
On Tue, Oct 8, 2013 at 2:01 PM, Sameer Farooqui wrote:
> Thanks fo
On Mon, Oct 7, 2013 at 5:35 AM, Vassilis Bekiaris <
bekiar...@iconplatforms.com> wrote:
> we are planning a Cassandra 1.2 installation at a client site; the client
> will run operations themselves and based on their IT team's experience they
> are more inclined towards running Cassandra nodes on W
On Tue, Oct 8, 2013 at 2:02 PM, Sameer Farooqui wrote:
> If I issue another cleanup, can you give me the rough steps for how to get
> the stacktrace?
I'm hoping it will show up in Cassandra's system.log, but since it's
triggered through JMX, it's possible that it will not.
--
Tyler Hobbs
Data
No, but I may be able to get one for you if the issue is reproducible when
I trigger another cleanup.
I originally issued the cleanup on the node via OpsCenter Community Edition
3.2.2
If I issue another cleanup, can you give me the rough steps for how to get
the stacktrace?
On Tue, Oct 8, 2013
Thanks for the reply, Tyler. I thought that too.. that maybe the SSTables
are mismatched in size... but upon closer inspection, that doesn't appear
to be the case:
-rw-r--r-- 1 cassandra cassandra 227 Oct 7 23:26 demodb-users-jb-1-Data.db
-rw-r--r-- 1 cassandra cassandra 242 Oct 8 00:38 demodb
SizeTieredCompactionStrategy only compacts sstables that are a similar size
(by default, they basically need to be within 50% of each other). Perhaps
your first SSTable was very large or small compared to the others?
On Mon, Oct 7, 2013 at 8:06 PM, Sameer Farooqui wrote:
> Hi,
>
> I have a fres
Do you have a complete stacktrace available?
On Tue, Oct 8, 2013 at 2:08 AM, Sameer Farooqui wrote:
> Hi,
>
> When running cleanup on a node with C* 2.0.1, I got the following error:
>
> cassandra01 - Error during cleanup: javax.management.MBeanException:
> java.util.concurrent.ExecutionExceptio
Hello,
I'm trying to determine the proper way to use PreparedStatements using the
datastax CQL Java driver;
so the API is
Session session = ...
PreparedStatement ps = session.prepare("INSERT INTO (column,
...) VALUES (?, ...)")
BoundStatement bs = new BoundStatement(ps);
//bind variables
sess
Hello,
I run Hadoop jobs which read data from Cassandra 1.2.8 and write results back
to another tables. One of my reduce tasks was killed 2 times by job tracker,
because it wasn't responding for more than 10 minutes, the 3rd attempt was
succesfull.
The error message for killed reduce tasks is
hi,
you can try :
nodetool getendpoints- Print the end points that
owns the key
2013/10/8 Christopher Wirt
> In CQL there is a token() function you can use to find the result of your
> partitioning schemes hash function for any value.
>
> ** **
>
> e.g. select token(value) from colum
In CQL there is a token() function you can use to find the result of your
partitioning schemes hash function for any value.
e.g. select token(value) from column_family1 where partition_column = value;
You then need to find out which nodes are responsible for that value using
nodetool ring o
I have created my key and column in cassandra like this
CREATE KEYSPACE demou
with placement_strategy = 'org.apache.cassandra.locator.
SimpleStrategy'
and strategy_options = [{replication_factor:1}];
CREATE COLUMN FAMILY users1
WITH comparator = UTF8Type
AND key_valid
Hi,
When using C* 2.0 in a large 100 node cluster with Murmer3Hash, vnodes and
256 tokens assigned to each node, is it possible to find out where a
certain key is destined to go?
If the keyspace defined has replication factor = 3, then a specific key
like 'row-1' would be destined to go to 3 node
Hi,
When running cleanup on a node with C* 2.0.1, I got the following error:
cassandra01 - Error during cleanup: javax.management.MBeanException:
java.util.concurrent.ExecutionException: java.lang.ClassCastException:
org.apache.cassandra.io.sstable.SSTableReader$EmptyCompactionScanner cannot
be c
19 matches
Mail list logo
