Re: Handle Leap Seconds with Cassandra

Based on most of what I've said previously pretty much most ways of avoiding your ordering issue of the leap second is going to be a "hack" and there will be some amount of hope involved. If the updates occur more than 300ms apart and you are confident your nodes have clocks that are within 150ms

Re: Rebuilding with vnodes

If the network and both DC's can handle the load it's fine (the new DC would . You'll want to keep an eye on the logs for streaming failures, as it's not always completely clear and you could end up with missing data. You should definitely be aware that rebuilds affect the source DC, so if it's

Re: Handle Leap Seconds with Cassandra

Thanks Ben for taking out time for the detailed reply !! We dont need strict ordering for all operations but we are looking for scenarios where 2 quick updates to same column of same row are possible. By quick updates, I mean >300 ms. Configuring NTP properly (as mentioned in some blogs in your

Re: Backup restore with a different name

Bryan, On Wed, Nov 2, 2016 at 11:38 AM, Bryan Cheng wrote: > do you mean restoring the cluster to that state, or just exposing that > state for reference while keeping the (corrupt) current state in the live > cluster? I mean "exposing that state for reference while

Re: Backup restore with a different name

Thanks Anubhav, Looks like a Java project without any documentation whatsoever ;) How do I use the tool? What does it do? Cheers, Jens On Wed, Nov 2, 2016 at 11:36 AM, Anubhav Kale wrote: > You would have to build some logic on top of what’s natively supported. > >

Re: Backup restore with a different name

Hi Jens, When you refer to restoring a snapshot for a developer to look at, do you mean restoring the cluster to that state, or just exposing that state for reference while keeping the (corrupt) current state in the live cluster? You may find these useful:

RE: Backup restore with a different name

You would have to build some logic on top of what’s natively supported. Here is an option: https://github.com/anubhavkale/CassandraTools/tree/master/BackupRestore From: Jens Rantil [mailto:jens.ran...@tink.se] Sent: Wednesday, November 2, 2016 2:21 PM To: Cassandra Group

Backup restore with a different name

Hi, Let's say I am periodically making snapshots of a table, say "users", for backup purposes. Let's say a developer makes a mistake and corrupts the table. Is there an easy way for me to restore a replica, say "users_20161102", of the original table for the developer to looks at the old copy?

Re: Cassandra Poor Read Performance Response Time

Hi, I am by no means an expert on Cassandra, nor on DateTieredCompactionStrategy. However, looking in "Query 2.xlsx" I see a lot of Partition index with 0 entries found for sstable 186 To me, that looks like Cassandra is looking at a lot of sstables and realize too late that they don't

Re: Introducing Cassandra 3.7 LTS

We are not publishing the build artefacts for our LTS at the moment as we don't test them on the different distros (debian/ubuntu, centos etc). If anyone wishes to do so feel free to create a PR and submit them! On Wed, 2 Nov 2016 at 11:37 Jesse Hodges wrote: > awesome,

Re: Introducing Cassandra 3.7 LTS

awesome, thanks for the tip! -Jesse On Wed, Nov 2, 2016 at 12:39 PM, Benjamin Roth wrote: > You can build one on your own very easily. Just check out the desired git > repo and do this: > > http://stackoverflow.com/questions/8989192/how-to- >

Re: failing bootstraps with OOM

Hi, probably you can try to start new node with auto_bootstrap: false and then repair keypaces or even tables one by one with nodetool repair Best regards, Vladimir Yudovin, Winguzone - Hosted Cloud Cassandra Launch your cluster in minutes. On Wed, 02 Nov 2016 10:35:45

Re: Custom receiver for WebSocket in Spark not working

I don't see a store() call in your receive(). Search for store() in here http://spark.apache.org/docs/latest/streaming-custom-receivers.html On Wed, Nov 2, 2016 at 10:23 AM, Cassa L wrote: > Hi, > I am using spark 1.6. I wrote a custom receiver to read from WebSocket. > But

Re: Introducing Cassandra 3.7 LTS

You can build one on your own very easily. Just check out the desired git repo and do this: http://stackoverflow.com/questions/8989192/how-to-package-the-cassandra-source-code-into-debian-package 2016-11-02 17:35 GMT+01:00 Jesse Hodges : > Just curious, has anybody

Custom receiver for WebSocket in Spark not working

Hi, I am using spark 1.6. I wrote a custom receiver to read from WebSocket. But when I start my spark job, it connects to the WebSocket but doesn't get any message. Same code, if I write as separate scala class, it works and prints messages from WebSocket. Is anything missing in my Spark Code?

Re: failing bootstraps with OOM

On Wed, Nov 2, 2016 at 3:35 PM, Mike Torra wrote: > > Hi All - > > I am trying to bootstrap a replacement node in a cluster, but it consistently fails to bootstrap because of OOM exceptions. For almost a week I've been going through cycles of bootstrapping, finding errors,

Re: Introducing Cassandra 3.7 LTS

Just curious, has anybody created a debian package for this? Thanks, Jesse On Sat, Oct 22, 2016 at 7:45 PM, Kai Wang wrote: > This is awesome! Stability is the king. > > Thank you so much! > > On Oct 19, 2016 2:56 PM, "Ben Bromhead" wrote: > >> Hi All

failing bootstraps with OOM

Hi All - I am trying to bootstrap a replacement node in a cluster, but it consistently fails to bootstrap because of OOM exceptions. For almost a week I've been going through cycles of bootstrapping, finding errors, then restarting / resuming bootstrap, and I am struggling to move forward.