Counters

I have a Counter defined as super column family *create column family TestCounter* *with column_type = Super* *and default_validation_class = CounterColumnType;* After i increment/decrement counter columns, cassandra-cli shows super column, column and key name as hex values, how do i get

Cassandra Meetup in San Francisco Bay Area

We are hosting a Cassandra meetup in BayArea. Jonathan will give a talk on Cassandra 0.7 The link to the meetup page is at http://www.meetup.com/Cassandra-User-Group-Meeting/ Thanks, Mubarak

Re: hazelcast

edin.com/in/germankondolf > >>> > >>> On Fri, Dec 10, 2010 at 2:50 PM, B. Todd Burruss > >>> wrote: > >>>> > >>>> http://www.hazelcast.com/product.jsp > >>>> > >>>> has anyone tested hazelcast as a distributed locking mechanism for > java > >>>> clients? seems very attractive on the surface. > >>>> > > > > > > -- > //GK > german.kond...@gmail.com > // sites > http://twitter.com/germanklf > http://www.facebook.com/germanklf > http://ar.linkedin.com/in/germankondolf > -- Thanks, Mubarak Seyed.

Design Question

eeper/ *Solution #2: *Using some home-grown approach to store/maintain who is accessing what, meaning which job is accessing which row. Are there any other solutions to the above problem? Can someone please help me on validate the design? -- Thanks, Mubarak Seyed.

Flush and compaction happens frequently

eap? -- Thanks, Mubarak Seyed.

Java version for Cassandra-0.7.0-beta1

) -- Thanks, Mubarak Seyed.

Pig Integration

Does anyone try to get data from Super column family using grunt shell? The example pig script explains how to analyze data for standard column family. -- Thanks, Mubarak Seyed.

Re: CassandraBulkLoader

art? > > As I said. Maybe you better start with a simpler scenario and leave > out HDFS for now. > > cheers > -- > Torsten > -- Thanks, Mubarak Seyed.

Re: StorageProxy.mutate

hanks, Mubarak On Sun, Jul 18, 2010 at 5:42 AM, Jonathan Ellis wrote: > UnavailableException means the node(s) with the requested data are > down. A sub-case of this is when no nodes at all are known, which may > be what you are seeing. > > On Sat, Jul 17, 2010 at 10:00 PM, Mubarak S

StorageProxy.mutate

rvice.StorageService.findSuitableEndPoint(StorageService.java:1203) at org.apache.cassandra.service.StorageProxy.weakReadRemote(StorageProxy.java:354) at org.apache.cassandra.service.StorageProxy.readProtocol(StorageProxy.java:409) at ClientOnlyExample.testReading(ClientOnlyExample.java:102) ... 1 more How can i mak

How to change the RF and repair

nodetool tpstats on all the nodes to verify AE-SERVICE-STAGE is completed and made sure that AE-SERVICE-STAGE is not active 6. Ran nodetool streams on all the nodes, made sure that streams are not active Can someone please correct me, if any of the above steps are wrong. -- Thanks, Mubarak Seyed.

Re: CassandraBulkLoader

Hi Torsten, If you could can you please share the command line function (to load TSV)? and Can you please help me on storing storage-conf.xml on HDFS part? Thanks, Mubarak On Tue, Jul 13, 2010 at 1:27 AM, Torsten Curdt wrote: > On Tue, Jul 13, 2010 at 04:35, Mubarak Seyed > wrote: >

Bootstrap Token collision

) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:619) -- Thanks, Mubarak Seyed.

Best Practices

Are there any best practices for Storage configurations, MemTable thresholds and Linux performance tuning to tune Cassandra nodes? -- Thanks, Mubarak Seyed.

Re: CassandraBulkLoader

Jul 13, 2010 at 04:35, Mubarak Seyed > wrote: > > Where can i find the documentation for BinaryMemTable (btm_example in > contrib) > > to use CassandraBulkLoader? What is the input to be supplied to > CassandraBulkLoader? > > How to form the input data and what is th

CassandraBulkLoader

, Mubarak Seyed.

Cassandra Pig Integration

how to fix this issue? Thanks, Mubarak Seyed.

Hector - Java doc

Where can i find the java doc for Hector java client? Do i need to build one from source? -- Thanks, Mubarak Seyed.

Write Rate / Second

How to find out the performance metrics such as write rate per second, and read rate per second. I could not find out from tpstats and cfstats command. Are there any attributes in JMX? Can someone please help me. Thanks, Mubarak

Load balancing

HI All, I have a requirement that we have around 100 application server instances and all needs to write/read data from cassandra's cluster, the write data rate is around 300k records per instance (approximately 30 millions for 100 instances). - How does client (application) connect to cassandr

Client connection and data distribution across nodes

Hi All, Regarding client thrift connection, i have 4 nodes which formed a ring, but client only knows the IP address of an one node (and thrift RPC port number), how does client can connect to any one other node without getting ring information? Can we keep the load balancer and bind all the fo