Elevated response times from all nodes in a data center at the same time.

et us know your suggestions on how to debug this issue. Has anyone experienced an issue like this before.(We had issues where one node starts acting bad due to bad EBS volume I/O read and write time, but all nodes experiencing an issue at same time is very peculiar) Thank You, Bill Walters.

Re: Would User Defined Type(UDT) nested in a LIST collections column type give good read performance

. The bigger the element (UDT in your case), the more memory it will requires on the coordinator side for decoding / deserialization. Each UDT shouldn't exceed 64 KB size. Thank You, Bill Walters. On Mon, Oct 30, 2017 at 3:52 AM, DuyHai Doan wrote: > Hello Bill > > First if you do

Would User Defined Type(UDT) nested in a LIST collections column type give good read performance

would yield good performance. Since UDTs are frozen and stored as BLOBs will there be any impediment while converting them after read by coordinator. If anyone has implemented a similar use-case, please let us know your suggestions. Thank You, Bill Walters.

Inter Data Center Latency calculation of a Multi DC cluster running in AWS

suggest if my strategies above will help in finding the Inter DC latency or there are other ways I need to follow. Thank You, Bill Walters.

[no subject]

=rja&uact=8&ved=0ahUKEwj5hK2_58_WAhVmzFQKHUSiA4YQtwIIVTAD&url=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3Dw3WbVMavy2I&usg=AOvVaw25xUCY2Jc7fGh7ngQF9ozt> for monitoring their cloud Cassandra clusters. Please let me know if there are any cloud native monitoring systems that work well with Cassandra, we will review it for our setup. Thank You, Bill Walters.

Re: Java GC pauses, reality check

e "java GC pauses are pretty >> much >> >> a fact of life" to "Any GC based system pauses are pretty much a fact >> of >> >> life". >> >> >> >> I would be more than happy to see if someone can counter prove. >> > >> > Azul disagrees. >> > https://www.azul.com/products/zing/pgc/ >> > >> > Best >> > Martin >> > > -- Cheers Bill

Compactions

Does Cassandra use mmap during reading and writing phase of compaction? -- Cheers Bill

Cassandra driver class

place "" with? Is "com.datastax.driver.core" even correct, or am I going down the wrong path? I am using the DataStax 2.0.2 driver, with Cassandra 2.0.8. Should I be using instead of ? Does anybody have a working example they can share? Any help to get me going would be appreciated. Thanks. Bill

Cassandra Connection Pooling

Hi, I'm looking for some good info on connection pooling, using JBoss. Is this something that needs to be configured within JBoss, or is it handled directly by the Cassandra classes themselves? Thanks. Bill

Bootstrap code

Hi All Can someone please point me to where the code for bootstrapping a new node exists? -- Cheers Bill

unsubscribe

From: Mich Talebzadeh mailto:m...@peridale.co.uk>> Reply-To: "user@cassandra.apache.org" mailto:user@cassandra.apache.org>> Date: Wednesday, April 22, 2015 at 3:06 AM To: "user@cassandra.apache.org" mailto:user@cassandra.apache

Cassandra 1.2.9 will not start

I tried restarting two nodes that were working and now I get this. INFO 15:13:50,296 Initializing system.range_xfers INFO 15:13:50,300 Initializing system.schema_keyspaces INFO 15:13:50,301 Opening /cassandra/data/system/schema_keyspaces/system-schema_keyspaces-ic-749926 (597 bytes) INFO 15:1

create index on column of user defined type?

Although I have not seen any documentation that says one cannot do this, version 2.1.2 is complaining about defining one. CREATE TYPE wdm.thing ( thing_name text, ... CREATE TABLE wdm.ctins ( foo_no text, item

Re: row cache

data or CQL tables whose compound keys create wide rows under the hood. Bill On 2013/08/23 17:30, Robert Coli wrote: On Thu, Aug 22, 2013 at 7:53 PM, Faraaz Sareshwala mailto:fsareshw...@quantcast.com>> wrote: According to the datastax documentation [1], there are two types of row cac

Paxos in 1.2

What is Paxos used for? Only CAS related operations?

sorting columns by time

Hi All I have a requirement where I need to have my columns sorted by the creation time. However I would like to have my own naming scheme for the columns and not use TimeUUID as column names. Please advice as to how I can achieve this in Cassandra as this has been pretty confusing to me.

C++ Thrift client

Hi All I am doing very small inserts into Cassandra in the range of say 64 bytes. I use a C++ Thrift client and seem consistently get latencies anywhere between 35-45 ms. Could some one please advise as to what might be happening? thanks

Re: High gossip traffic volume on 1.1.9

0Kbps on 9160). Bill On Tuesday 9 April 2013 at 20:31, Bill de hÓra wrote: > A test 3 node cluster I'm running, managed by Priam, has 'suddenly' seen its > gossip traffic fly up, peaking at 120mbps. Looking at tcpdump it seems there > is simply a high rate of goss

High gossip traffic volume on 1.1.9

no markdowns/hints/gc and all else seems healthy. I'm wondering if anyone has seen this behaviour on 1.1.9 and/or Priam? Bill

Re: Using Cassandra for read operations

each change. No-one will know your workload better than you and the questions you are asking are workload sensitive. - Allow time for tuning and spending time understanding the memory model and JVM GC. - Be very careful with caches. Leave enough room in the OS for its own disk cache. - Get an SSD

Re: High read latency cluster

a server that doesn't have much memory headroom, then you'll want to expand the cluster at some point to spread out the load. Bill On 8 Feb 2013, at 13:03, Alain RODRIGUEZ wrote: > Hi, > > I have some big latencies (OpsCenter homepage shows an average about 30-60 > m

Re: State of Cassandra and Java 7

can tell, and that's not really in the hand of the project." Exactly right. If enough people use Cassandra on Java7 and enough people file bugs about Java 7 and enough people work on bugs for Java 7 then Cassandra will eventually work well enough on Java7. Bill On 14 Dec 2012, at

Re: Row caching + Wide row column family == almost crashed?

ly happens to be very evident with that system - generally to get an effective benefit from a cache, the data should be contiguously sized and not too large to allow effective cache 'lining'. Bill On 02/12/12 21:36, Mike wrote: Hello, We recently hit an issue within our Cassandra b

Re: Generic questions over Cassandra 1.1/1.2

ned tables. I still work through thrift/cli as a result, which is a pity because CQL has a nice surface. Bill On 28/11/12 01:32, Edward Capriolo wrote: @Bill Are you saying that now cassandra is less schema less ? :) Compact storage is the schemaless of old. On Tuesday, November 27, 2012, Bill

Re: Generic questions over Cassandra 1.1/1.2

. gender varchar, ... session_token varchar, ... state varchar, ... birth_year bigint, ... PRIMARY KEY (user_name) ... ); }}} I expect this would not cause an unknown identifier error - {{{ INSERT INTO users (user_name, password, extra, moar) VALUES ('bob', 'secret', 'a',

Re: Data Modeling - JSON vs Composite columns

row size. Bill On 19/09/12 13:00, Roshni Rajagopal wrote: Hi, There was a conversation on this some time earlier, and to continue it Suppose I want to associate a user to an item, and I want to also store 3 commonly used attributes without needing to go to an entity item column family , I have

Bloom Filters in Cassandra

How are bloom filters used in Cassandra? Is my understanding correct in that there is one per SSTable encapsulating what keys are in the SSTable? Please advise.

Re: Never ending manual repair after adding second DC

I had ran into the same problem before: http://comments.gmane.org/gmane.comp.db.cassandra.user/25334 I have not fond any solutions yet. Bill On Mon, Jul 16, 2012 at 11:10 AM, Bart Swedrowski wrote: > > > On 16 July 2012 11:25, aaron morton wrote: > >> In the before time so

Bootstrap code path

Could someone please tell me where I should start looking at code to understand how cassandra bootstrap process works? I am sure it is complicated but I have time. Also is my understanding correct that the new nodes that are added are not joining the ring till the bootstrap process is complete i.e

Re: RE items removed from 1.1.0 cfstats output

Right; thanks Romain. Bill On 29/06/12 13:07, Romain HARDOUIN wrote: These settings are global since cassandra 1.1: - Make sure that global settings: key_cache_{size_in_mb, save_period} and row_cache_{size_in_mb, save_period} in conf/cassandra.yaml are used instead of per

items removed from 1.1.0 cfstats output

Were Key cache capacity: Key cache size: Key cache hit rate: Row cache: removed from cfstats in 1.1.0? I can see them in 1.0.8 but not 1.1.0. If so, was wondering why, as they're fairly useful :) Bill

Re: Ball is rolling on High Performance Cassandra Cookbook second edition

grams/cfstats and what they're actually saying - Capacity sizing (disk/ram overhead needed) - Compaction choice/strategies for kinds of workload Bill On 26/06/12 22:25, Edward Capriolo wrote: Hello all, It has not been very long since the first book was published but several things have

removing second data center from live cluster

. Is that the right approach? Is there anything I need to watch out for? Bill

Re: how to re-distribute replicas after changing rack assignment

Thanks, Aaron. Moving one node at a time and running repair does seem to do the trick. Bill On Thu, May 10, 2012 at 7:03 AM, aaron morton wrote: > That's a bit tricky. How many nodes, what is the replication and what is > the current rack assignment ? > > NTS stripes data ov

Re: getting status of long running repair

I am running 1.0.8. Two data center with 8 machines in each dc. Nodes are all up while repairing is running. No dropped Mutations/Messages. I do see HintedHandoff messages. Bill On Tue, May 8, 2012 at 11:15 PM, Vijay wrote: > What is the version you are using? is it Multi DC setup? Are

Re: getting status of long running repair

7;t really viable for us. Bill On Tue, May 8, 2012 at 6:04 AM, aaron morton wrote: > When you look in the logs please let me know if you see this error… > https://issues.apache.org/jira/browse/CASSANDRA-4223 > > I look at nodetool compactionstats (for the Merkle tree phase), nodet

Re: getting status of long running repair

I restarted the nodes and then restarted the repair. It is still hanging like before. Do I keep repeating until the repair actually finish? Bill On Fri, May 4, 2012 at 2:18 PM, Rob Coli wrote: > On Fri, May 4, 2012 at 10:30 AM, Bill Au wrote: > > I know repair may take a long ti

getting status of long running repair

show no activity. Bill

Re: nodetool repair hanging

. Bill On Wed, Apr 25, 2012 at 11:49 AM, Gregg Ulrich wrote: > How much data do you have and how long is "a while"? In my experience > repairs can take a very long time. Check to see if validation compactions > are running (nodetool compactionstats) or if files are

Re: Adding a second datacenter

g added to the new node. But repair never returns and there are no new messages in system.log. I ran repair a second time but it is still hanging. Did I missed anything or did something wrong? How do I recover from this? Bill On Mon, Mar 5, 2012 at 11:34 AM, David Koblas wrote: > Jeremia

nodetool repair hanging

waiting for a while. I do see data being added to the new nodes. When I ran repair for the second time it is still hanging. Why is repair hanging? Is it save to use control-C to break out of it. How do I recover from this? Bill

Re: default required in cassandra-topology.properties?

I had thought that the topology file is used for replicas placement only such that for the token range that the unknown node is responsible for, data is still read and write there. It just won't be replicated since replication factor is not defined. Bill On Thu, Apr 19, 2012 at 1:18 PM, Ri

Re: High Log Storage

Try writing them through Kafka. It should that load. Bill Sent from my BlackBerry® wireless handheld -Original Message- From: Trevor Francis Date: Thu, 19 Apr 2012 12:04:19 To: Reply-To: user@cassandra.apache.org Subject: High Log Storage I have a web application that generates

default required in cassandra-topology.properties?

All the examples of cassandra-topology.properties that I have seen have a default entry assigning unknown nodes to a specific data center and rack. Is it possible to have Cassandra ignore unknown nodes for the purpose of replication? Bill

Re: 1.0.2 - nodetool ring and info reports wrong load after compact

Thanks for the info. Upgrade within the 1.0.x branch is simply a rolling restart, right? Bill On Thu, Feb 16, 2012 at 9:20 PM, Jonathan Ellis wrote: > CASSANDRA-3496, fixed in 1.0.4+ > > On Thu, Feb 16, 2012 at 8:27 AM, Bill Au wrote: > > I am running 1.0.2 with the default ti

Re: 1.0.2 - nodetool ring and info reports wrong load after compact

No, I am not using compression. Bill On Thu, Feb 16, 2012 at 2:05 PM, aaron morton wrote: > Are you using compression ? > > I remember some issues with compression and reported load, cannot remember > the details. > > Cheers > > - > Aaron M

1.0.2 - nodetool ring and info reports wrong load after compact

full GC in the JVM but that made no difference. When I restarted Cassandra, nodetool once again report the correct load. Is this a known problem? Bill

How does NetworkStrategy work?

If I have a replication factor set up as 3 and I want data replicated across data centers would I get 3 replicas per DC or is each replica placed in a different Data centers?

Re: cassandra read performance on large dataset

> Our largest dataset has 1200 billion rows. Radim, out of curiosity, how many nodes is that running across? Bill On 28/11/11 13:44, Radim Kolar wrote: I understand that my computer may be not as powerful as those used in the other benchmarks, but it shouldn't be that far off (1:30

Re: commodity server spec

andra caches, etc. You generally won't be recommended to use a NAS/SAN for this class of system. The commitlogs work best on attached (dedicated) disk. Bill On 04/09/11 14:08, China Stoffen wrote: Then what will be the sweetspot for Cassandra? I am more interested in Cassandra because my a

Re: commodity server spec

aking at some point (dbs even the mature ones, fail from time to time) and 2 doesn't give you much room to maneuver in production. Bill On 03/09/11 23:05, Chris Goffinet wrote: It will also depend on how long you can handle recovery time. So imagine this case: 3 nodes w/ RF of 3 Each no

Range scan

How does range scan work in Cassandra? Does the read of a key perform the read across all the SSTables that contain the key and return the row or are SSTables processed sequentially? If I have a key k and its columns are spread across N SSTables then does the read of key k return the row with all t

checksumming

Are checksum errors detected in Cassandra and if so how are they resolved?

Re: Cassandra-2252

Oops. Sorry. Any information would be great. Regards Bill. On Tue, Aug 2, 2011 at 8:20 PM, Avinash Lakshman wrote: > Bill > > You have done it again :). Jonathan is the man you need to contact for this > or as I advised the mailing list is the best. But don't sign off as me.

Cassandra-2252

Is this part of trunk and used? I see the code for MemtableAllocator but I don't see it being used. Avinash

Maybe OT

I was wondering if the datastax folks could please share their settings for the thrift build. We would like to make some additions/changes to thrift and have basic build issues. Not much support in their avenues it looks like. -- Cheers Bill

cql/secondary indexes - select in

I was wondering if there are plans for (or any interest in) an IN operator for CQL/Secondary Indexes? I have a use case to pull back N keys on an index and rather than perform N selects would like to do this SELECT ... WHERE KEY = keyname AND colname IN [val1,,..] Bill

memory utilization

Hi All Memory utilization reported by JCOnsole for Cassandra seems to be much lesser than that reported by top ("RES" memory). Can someone explain this? Maybe off topic but would appreciate a response. -- Cheers Bill

Dropping & Creating Column Families Never Returns

27/60 GC grace seconds: 864000 Compaction min/max thresholds: 4/32 Read repair chance: 1.0 Built indexes: [] [default@Logging] list Messages; Messages not found in current keyspace. Any ideas? Bill-

Re: Indexes and hard disk

. This for me is one of the features that really sets Cassandra apart - scaling and indexing data at the same time is hard, and very few systems do both well. Bill

Re: Cassandra documentation

date, eg references to Avro and the code samples, but the overall gist of things is fine. I hope O'Reilly will do a 2nd ed for 0.8 this year. A High Performance Cassandra a la Zawodny's MySQL book would be a no brainer. Almost all the problems I see on user@ are operational/perf/tuning related. Bill

Re: Indexes and hard disk

ut the anything you get might not be optimal for your app, which means you will have to tune the App and Cassandra, or get different kit. Bill

Re: How to store news lists in optimal way?

I don't know enough about Lucene to comment, but option #2 seems like a bad idea. You shouldn't grow your database by the number of Column Families as there are bad implications to doing this. Option #1 or #3 seems plausible depending upon how much data you have. Hope this helps... Bil

Re: Super Slow Multi-gets

Sorry, I was setting the file on my client not the server. I will make this change and get back to you. Thanks again for the help... Bill- On Feb 10, 2011 4:45 PM, "Bill Speirs" wrote: > Doesn't seem to help, I just get a bunch of messages that look like this: > > DEBUG

Re: Super Slow Multi-gets

th my other setting... Bill- On Thu, Feb 10, 2011 at 4:37 PM, Aaron Morton wrote: > Assuming cassandra 0.7 in log4j-server.properties make it look like this... > log4j.rootLogger=DEBUG,stdout,R > > > A > On 11 Feb, 2011,at 10:30 AM, Bill Speirs wrote: > > I switched my implem

Re: Super Slow Multi-gets

this and I'm not seeing these messages: log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.layout=org.apache.log4j.SimpleLayout log4j.category.org.apache=DEBUG, stdout log4j.category.me.prettyprint=DEBUG, stdout Thanks... Bill- On Thu, Feb 10, 2011 at 12:53 PM, B

Re: Super Slow Multi-gets

Each message row is well under 1K. So I don't think it is network... plus all boxes are on a fast LAN. Bill- On Feb 10, 2011 11:59 AM, "Utku Can Topçu" wrote: > Dear Bill, > > How about the size of the row in the Messages CF. Is it too big? Might you > be having a

Re: Super Slow Multi-gets

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) Does any of that mean anything to anyone? Thanks... Bill- On Thu, Feb 10, 2

Super Slow Multi-gets

s way too slow. Thoughts? Bill-

Re: Do supercolumns have a purpose?

them, which is irksome; but maybe I'm being lazy when it comes to modelling and now that secondary indexes are in, I should pretend SCFs don't exist. Bill

Re: time to live rows

I don't think this is supported (but I could be completely wrong). However, I'd love to see this functionality as well. How would one go about requesting such a feature? Bill- On Mon, Feb 7, 2011 at 4:15 PM, Kallin Nagelberg wrote: > Hey, > > I have read about the new TTL c

Re: Sorting in time order without using TimeUUID type column names

You can specify reverse order through the API when you slice the cols so I don't think you need to write a comparator. Bill- On Feb 4, 2011 9:45 PM, "Aditya Narayan" wrote: Thanks Aaron, Yes I can put the column names without using the userId in the timeline row, and when I w

Row Key Types

; instead of the TimeUUID range of '----' to '----'. This works, but feels wrong/inefficient... thoughts? Thanks... Bill-

Re: Probelms with Set on Byte type New Installation

No worries... it forced me to setup an env to test my understanding. I'm still trying to learn/understand. Bill- On Wed, Jan 26, 2011 at 4:23 PM, David Quattlebaum wrote: > Bill, > > You are absolutely correct, I must not have set the default_validation_class > when I added

Re: Schema Design

harding by system? I thought -- probably incorrectly -- that the row keys are used in the sharding process, not column families. Thanks... Bill- On Wed, Jan 26, 2011 at 4:17 PM, buddhasystem wrote: > > Having separate columns for Year, Month etc seems redundant. It's tons more > e

Re: Schema Design

over time? 2) maybe it's just a restriction of the CLI, but how do I do issue a slice request? Also, what if start (or end) columns don't exist? I'm guessing it's smart enough to get the columns in that range. Thanks! Bill- On Wed, Jan 26, 2011 at 4:12 PM, David McNelis wro

Re: Probelms with Set on Byte type New Installation

it will return properly: [default@Devel] set david['david']['id'] = integer(37); Value inserted. [default@Devel] get david['david']['id'] as integer; => (column=6964, value=37, timestamp=1296075929082000) Hope that helps... again, I'm new to this so

Schema Design

r example, I cannot issuing: get system_x where month > 1; gives me this error: "No indexed columns present in index clause with operator EQ." The equals operator works as expected though: get system_x where month = 1; What schema would allow me to get date ranges? Thanks in a

RE: Probelms with Set on Byte type New Installation

I'm very (2 days) new to Cassandra, but what does the output look like? Total shot in the dark, if the number is less than 256 would it not look the same as bytes or a number? Hope that in some way helps... Bill- From: David Quattlebaum [mailto:dquat...@medprocure.com] Sent: Wednesday, Ja

Re: Running multiple instances on a single server --micrandra ??

etter to rethink compaction if that's what's driving the idea. It seems to what is biting everyone, along with GC. Bill

Re: Cassandra and disk space

space in the cluster is lower than 50% when capacity planning? If so, for some workloads where it's just data pouring in with very few updates, would have me thinking I'd want a tiered model, archiving cold data onto a filer/hdfs. Bill On Thu, 2010-12-09 at 13:26 -0600, Tyler H

Re: Cassandra crashed - possible JMX threads leak

ather quickly when I restart a node in a live cluster. I took a look at the Cassandra source and see that NodeProbe is the only place that creates and uses a JMX connection. And NobeProbe is only used by the tools. So it seems that there is another JMX thread leak in Cassandra. Bill On Fri, Oct

Re: Cassandra crashed - possible JMX threads leak

d and write requests. I am guessing the hinted hand off might have something to do with it. I am still trying to understand what is happening there. Bill On Wed, Oct 20, 2010 at 5:16 PM, Jonathan Ellis wrote: > can you reproduce this by, say, running nodeprobe ring in a bash while > loop

Re: Commit log files

> On 22 Oct 2010, at 03:40, Bill Hastings wrote: > > > Does Cassandra maintain a commit log per table? Or are they co-mingled? > > > > -- > > Cheers > > Bill > > -- Cheers Bill

Commit log files

Does Cassandra maintain a commit log per table? Or are they co-mingled? -- Cheers Bill

Cassandra crashed - possible JMX threads leak

calls its close() method. I tried setting jmx.remote.x.server.connection.timeout to 0 hoping that would disable the JMX server connection timeout threads. But that did not make any difference. Has anyone else seen this? Bill

Re: Node OOM Problems

no.blip.tv/file/4012133/). Can you send all of nodetool tpstats? Bill

Map/Reduce over Cassandra

Hi All How performant is M/R on Cassandra when compared to running it on HDFS? Anyone have any numbers they can share? Specifically how much of data the M/R job was run against and what was the throughput etc. Any information would be very helpful. -- Cheers Bill

Re: The stability of Hadoop jobs outputting to Cassandra

> and > wanted to know how stable that update is. Will it be made part of a release > any time soon? Has anyone been using the update regularly? > > Thanks! > --Keith > -- Cheers Bill

Re: Data Distribution / Replication

That data suggests the inbuilt tools are a hazard and manual workarounds less so. Can you point me at the bugs? Bill On Fri, 2010-08-13 at 20:30 -0700, Benjamin Black wrote: > Number of bugs I've hit doing this with scp: 0 > Number of bugs I've hit with streaming: 2 (and o

Re: Data Distribution / Replication

On Fri, 2010-08-13 at 09:51 -0700, Benjamin Black wrote: > My recommendation is to leave Autobootstrap disabled, copy the > datafiles over, and then run cleanup. It is faster and more reliable > than streaming, in my experience. What is less reliable about streaming? Bill

Re: Question on load balancing in a cluster

If nodetool loadbalance does not do what it's name implies, should it be renamed or maybe even remove altogether since the recommendation is to _never_ use it in production? Bill On Thu, Aug 5, 2010 at 6:41 AM, aaron morton wrote: > This comment from Ben Black may help... > > &q

Re: Cassandra Horizontal Scalability

eg are you writing binary files)? How many client processes are you running? What are the server configurations? How much data are nodes carrying? What does the output of ./nodetool cfstats say? What version of cassandra are you running? Are there errors in the server logs? Bill On Mon, 2010-0

Re: Newbie to cassandra

can I start > working > > with Cassandra? > > Any help is appreciated. > > Thanks in advance. > > Sonia > > > > -- > Jonathan Ellis > Project Chair, Apache Cassandra > co-founder of Riptano, the source for professional Cassandra support > http://riptano.com > -- Cheers Bill

Re: RackAwareStrategy vs RackUnAwareStrategy on AWS EC2 cloud

east: A B C west: D Perhaps you are blocking on a write to D - what's your quorum/rf set up as? Bill On Fri, 2010-07-09 at 10:36 -0700, maneela a wrote: > Are there any known performance issues if cassandra cluster > launched with RackAwareStrategy because

Re: Digg 4 Preview on TWiT

Nonetheless, thanks for clearing that one up. And that's some serious volume you've got there :) Bill On Tue, 2010-07-06 at 12:01 -0700, Prashant Malik wrote: > This is a ridiculous statement by some newbie I guess , We today have > a 150 node Cassandra cluster running Inbox s

Re: Digg 4 Preview on TWiT

swers? Lots of companies do or don't adopt technology for non-technical reasons. Facebook I gather has made big investments in Hadoop, I'd say it's natural to look at things that run on that ecosystem. Bill > > On 7/6/2010 5:34 AM, David Strauss wrote: > > On 2010-07-0

0.7 source code

Where can I find it? -- Cheers Bill

Re: Digg 4 Preview on TWiT

best of my knowledge, this has always been the case. This person's understanding is that Facebook 'no longer contributes to nor uses Cassandra.': http://redmonk.com/sogrady/2010/05/17/beyond-cassandra/ I assume it's accurate - policy reasons wouldn't interest me as much as technical ones. Bill

Re: Remove and BytesType

> More likely data in that row was created with a > higher-res timestamp than the delete was issued at. Indeed - the problem was nanos v millis with a bit of clock skew thrown in :) Bill Jonathan Ellis wrote: remove to a full row doesn't touch comparewith at all. I think t

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