Dear community,
Is it possible to have a cluster in Cassandra where each of the server is
running multiple instances of Cassandra(each instance is part of the same
cluster).
I'm aware that if there's a single server in the cluster, then it's possible to
run multiple instances of Cassandra on
Dear Community,
Is there any benefit of taking backup of a node via 'nodetool snapshot' vs
simply copying the data directory other than the fact that snapshot will first
flush the memTable and then take the backup.
Thanks and regards,
Vishal Sharma
"Confidentiality Warning: This message and
Dear community,
Sometimes I've noticed that the changes done in the database, even when done
successfully are not reflected e.g. I added/deleted a row via cqlsh/Datastax
C++ driver, the command/API was successful, yet when I fetched the contents of
the table, the row that I had added/deleted,
Who’s awesome?
Jeff Jirsa is awesome!
☺
Thanks and regards,
Vishal Sharma
From: Jeff Jirsa [mailto:jji...@gmail.com]
Sent: Friday, May 11, 2018 5:51 PM
To: user@cassandra.apache.org
Subject: Re: Database not getting updated
This usually happens when you’ve got weird timestamps or a delete in
Dear Community,
I’ll appreciate if I can get some responses to the observation below:
https://stackoverflow.com/q/50763067/5701173
Thanks and regards,
Vishal Sharma
"Confidentiality Warning: This message and any attachments are intended only
for the use of the intended recipient(s).
are
Dear Community,
I took a snapshot from a node which was part of a 2 node cluster. There were 2
keyspaces in that cluster K1 and K2. I took snapshot of K1 only. Now I create
both keyspaces in some other cluster having only one node. When I tried to
restore the snapshot(of keyspace K1) in that
On altering the Keyspace, the warning disappears. I think the warning was not
totally wrong, just slightly inaccurate.
From: Nitan Kainth [mailto:nitankai...@gmail.com]
Sent: Wednesday, June 13, 2018 4:38 PM
To: user@cassandra.apache.org
Subject: Re: Restoring snapshot
Change RF fir k2 and
For both K1 and K2, replication factor is 2 in the new cluster(although the
number of nodes is 1). I can understand the portion of the warning which says
that “only 1 replica could be found” but the question is, why is it giving the
name of keyspace K2 when I was restoring only K1(It should
Dear Community,
I’ll appreciate if I can get some help below:
https://stackoverflow.com/q/50581473/5701173
Regards,
Vishal Sharma
"Confidentiality Warning: This message and any attachments are intended only
for the use of the intended recipient(s).
are confidential and may be privileged. If
Dear Community,
Can you please help in answering the question below:
https://stackoverflow.com/questions/49769643/cassandra-read-process
Thanks and regards,
Vishal Sharma
"Confidentiality Warning: This message and any attachments are intended only
for the use of the intended recipient(s).
are
Dear Community,
In Cassandra 3.11.2, there are 3 choices for the type of Memtable allocation
and as per my understanding, if I want to keep Memtables on JVM heap I can use
heap_buffers and if I want to store Memtables outside of JVM heap then I've got
2 options offheap_buffers and
Dear Community,
One of the tables in my keyspace is using LevelCompactionStrategy and when I
used the nodetool tablestats keyspace.table_name command, I found some mismatch
in the count of SSTables displayed at 2 different places. Please refer the
attached image.
The command is giving SSTable
I used version: 3.11.2
I want to add that both the counts (SSTables, sum of numbers shown in levels),
change after some time and become equal(i.e. the mismatch does not last
forever) which has led me to believe that this mismatch happens only when the
compaction process is going on and once
I'm trying to integrate Apache Ignite with Apache Cassandra(3.11.2) as I want
to use Ignite to cache the data present in my already existing Cassandra
database.
After going through the online resources, I've done the following till now:
1. Downloaded Apache
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