gt;
>>> monitoring iostat and gc logs may help..
>>>
>>> Thanks
>>> Anuj Wadehra
>>> --
>>> *From*:"Amlan Roy"
>>> *Date*:Wed, 1 Apr, 2015 at 9:27 pm
>>> *Subject*:Re: Frequent timeout
sh que size is set at least equal to no of indexes..
>>
>> monitoring iostat and gc logs may help..
>>
>> Thanks
>> Anuj Wadehra
>> ----------
>> *From*:"Amlan Roy"
>> *Date*:Wed, 1 Apr, 2015 at 9:27 pm
>> *Su
..make sure that memtable
> flush que size is set at least equal to no of indexes..
>
> monitoring iostat and gc logs may help..
>
> Thanks
> Anuj Wadehra
> --
> *From*:"Amlan Roy"
> *Date*:Wed, 1 Apr, 2015 at 9:27 pm
> *Subj
indexes in cf ..make sure that memtable flush que size is set at
least equal to no of indexes..
monitoring iostat and gc logs may help..
Thanks
Anuj Wadehra
From:"Amlan Roy"
Date:Wed, 1 Apr, 2015 at 9:27 pm
Subject:Re: Frequent timeout issues
Did not see any exception in cassand
On Wed, Apr 1, 2015 at 8:37 AM, Amlan Roy wrote:
> Replication factor is 2.
>
It is relatively unusual for people to use a replication factor of 2, for
what it's worth.
=Rob
Did not see any exception in cassandra.log and system.log. Monitored using
JConsole. Did not see anything wrong. Do I need to see any specific info? Doing
almost 1000 writes/sec.
HBase and Cassandra are running on different clusters. For cassandra I have 6
nodes with 64GB RAM(Heap is at default
y prohibited.
>
>
>
> From: Amlan Roy
> Reply-To:
> Date: Wednesday, April 1, 2015 at 11:37 AM
> To:
> Subject: Re: Frequent timeout issues
>
> Replication factor is 2.
> CREATE KEYSPACE ct_keyspace WITH replication = {
> 'class': 'NetworkTopo
ecipient is
strictly prohibited.
From: Amlan Roy
Reply-To:
Date: Wednesday, April 1, 2015 at 11:37 AM
To:
Subject: Re: Frequent timeout issues
Replication factor is 2.
CREATE KEYSPACE ct_keyspace WITH replication = {
'class': 'NetworkTopologyStrategy',
'DC1&
Replication factor is 2.
CREATE KEYSPACE ct_keyspace WITH replication = {
'class': 'NetworkTopologyStrategy',
'DC1': '2'
};
Inserts are happening from Storm using java driver. Using prepared statement
without batch.
On 01-Apr-2015, at 8:42 pm, Brice Dutheil wrote:
> And the keyspace? What
Are HBase and Cassandra running on the same servers? Are the writes to each of
these databases happening at the same time?
Regards,
Eric R Medley
> On Apr 1, 2015, at 10:12 AM, Brice Dutheil wrote:
>
> And the keyspace? What is the replication factor.
>
> Also how are the inserts done?
>
>
Are you seeing any exceptions in the cassandra logs? What are the loads on your
servers? Have you monitored the performance of those servers? How many writes
are you performing at a time? How many writes per seconds?
Regards,
Eric R Medley
> On Apr 1, 2015, at 9:40 AM, Amlan Roy wrote:
>
> W
And the keyspace? What is the replication factor.
Also how are the inserts done?
On Wednesday, April 1, 2015, Amlan Roy wrote:
> Write consistency level is ONE.
>
> This is the describe output for one of the tables.
>
> CREATE TABLE event_data (
> event text,
> week text,
> bucket int,
>
Write consistency level is ONE.
This is the describe output for one of the tables.
CREATE TABLE event_data (
event text,
week text,
bucket int,
date timestamp,
unique text,
adt int,
age list,
arrival list,
bank text,
bf double,
cabin text,
card text,
carrier list,
cb d
Hi Eric,
Thanks for the reply. Some columns are big but I see the issue even when I stop
storing the big columns. Some of the writes are timing out, not all. Where can
I find the number of writes to Cassandra?
Regards,
Amlan
On 01-Apr-2015, at 7:43 pm, Eric R Medley wrote:
> Amlan,
>
> Can
Also, can you provide the table details and the consistency level you are using?
Regards,
Eric R Medley
> On Apr 1, 2015, at 9:13 AM, Eric R Medley wrote:
>
> Amlan,
>
> Can you provide information on how much data is being written? Are any of the
> columns really large? Are any writes succe
Amlan,
Can you provide information on how much data is being written? Are any of the
columns really large? Are any writes succeeding or are all timing out?
Regards,
Eric R Medley
> On Apr 1, 2015, at 9:03 AM, Amlan Roy wrote:
>
> Hi,
>
> I am new to Cassandra. I have setup a cluster with Ca
Hi,
I am new to Cassandra. I have setup a cluster with Cassandra 2.0.13. I am
writing the same data in HBase and Cassandra and find that the writes are
extremely slow in Cassandra and frequently seeing exception “Cassandra timeout
during write query at consistency ONE". The cluster size for bot
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