I sent a message to DataStax Docs to add this nodetool flush suggestion to
the doc for sstableloader.
-- Jack Krupansky
On Fri, Feb 5, 2016 at 3:35 AM, Romain Hardouin wrote:
> > What is the best practise to create sstables?
>
> When you run a "nodetool flush" Cassandra persists all the memtabl
Arindam,
What can you share regarding the source from which you are importing data?
Is it a separate cassandra cluster? If so, how many nodes and datacenters?
What is RF (replication factor) of source cluster? How certain are you that
the rows indeed exist in the set of sstables which you are load
> What is the best practise to create sstables?
When you run a "nodetool flush" Cassandra persists all the memtables on disk,
i.e. it produces sstables.
(You can create sstables by yourself thanks to CQLSSTableWriter, but I don't
think it was the point of your question.)
What is the best practise to create sstables?
On 1 February 2016 at 15:21, Romain Hardouin wrote:
> Did you run "nodetool flush" on the source node? If not, the missing rows
> could be in memtables.
>
Did you run "nodetool flush" on the source node? If not, the missing rows could
be in memtables.
I agree that there should be more clear doc on exactly how the estimation
is calculated. When I inquired about this recently the response was that it
should be within about 2% of the actual key count. I started looking at the
code, but I ran out of time before I chased down all the subsidiary facto
Why in cqlsh when I query "select count(*) from mordor.things_values_meta
;" it says: 4692
But in nodetool cfstats it says Number of keys (estimate): 4720?
On 29 January 2016 at 16:25, Arindam Choudhury <
arindam.choudh...@ackstorm.com> wrote:
> I am counting the rows with "select count(*) from
And how are you counting the rows? With a query? If, so, what is the query.
Using nodetool cfstats (estimated) key count? Or... what?
Are the tokens for the missing rows is the same range and a distinct range
from the rest of the data in the original cluster?
How many nodes in the original cluste
I am counting the rows with "select count(*) from
mordor.things_values_meta;"
I am doing one node cluster to one node cluster for testing.
On 29 January 2016 at 16:20, Jack Krupansky
wrote:
> And how are you counting the rows? With a query? If, so, what is the
> query. Using nodetool cfstats (e
I will check the output of nodetool cfstats.
Its from version 2.1.2 to version 2.1.9.
On 29 January 2016 at 16:02, Jack Krupansky
wrote:
> Are these sstables from an existing Cassandra cluster or generated by a
> program?
>
> If the former, do a nodetool tablestats or cfstats to get the sstable
Are these sstables from an existing Cassandra cluster or generated by a
program?
If the former, do a nodetool tablestats or cfstats to get the sstable count
and compare it to both the number of sstables that the loader is reading
from and the number that end up in the target cluster.
What Cassand
Hi Romain,
The RF was set to 2.
I changed it to one.
CREATE KEYSPACE mordor WITH replication = {'class' : 'SimpleStrategy',
'replication_factor' : 1} AND durable_writes = true;
re-inserted the columns, still missing rows.
Regards,
Arindam
On 29 January 2016 at 15:14, Romain Hardouin wrote:
Hi,
I assume a RF > 1. Right?What is the consistency level you used? cqlsh use ONE
by default. Try: cqlsh> CONSISTENCY ALLAnd run your query again.
Best,Romain
Le Vendredi 29 janvier 2016 13h45, Arindam Choudhury
a écrit :
Hi Kai,
The table schema is:
CREATE TABLE mordor.things_value
Hi Kai,
The table schema is:
CREATE TABLE mordor.things_values_meta (
thing_id text,
key text,
bucket_timestamp timestamp,
total_rows counter,
PRIMARY KEY ((thing_id, key), bucket_timestamp)
) WITH CLUSTERING ORDER BY (bucket_timestamp ASC)
AND bloom_filter_fp_chance = 0.0
Arindam,
what's the table schema and what does your query to retrieve the rows look
like?
On Fri, Jan 29, 2016 at 7:33 AM, Arindam Choudhury <
arindam.choudh...@ackstorm.com> wrote:
> Hi,
>
> I am importing data to a new cassandra cluster using sstableloader. The
> sstableloader runs without any
Hi,
I am importing data to a new cassandra cluster using sstableloader. The
sstableloader runs without any warning or error. But I am missing around
1000 rows.
Any feedback will be highly appreciated.
Kind Regards,
Arindam Choudhury
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