me.prettyprint.hector.api.exceptions.HInvalidRequestException: InvalidRequestException(why:Cluster schema does not yet agree)

cluster. Thanks. -- Dikang Gu 0086 - 18611140205

Re: me.prettyprint.hector.api.exceptions.HInvalidRequestException: InvalidRequestException(why:Cluster schema does not yet agree)

with the disagreeing shema solved the issue. On Thu, May 5, 2011 at 12:40 AM, Dikang Gu dikan...@gmail.com wrote: I got this exception when I was trying to create a new columnFamily using hector api. me.prettyprint.hector.api.exceptions.HInvalidRequestException: InvalidRequestException

How to reduce the Read Latency.

? Any other options? Thanks. -- Dikang Gu 0086 - 18611140205

Re: How to reduce the Read Latency.

I use the default consistency level in the hector client, so it should be QUORUM. -- Dikang Gu 0086 - 18611140205 On Friday, May 20, 2011 at 4:25 PM, Jeffrey Kesselman wrote: What consistency are you asking for? On Fri, May 20, 2011 at 7:42 AM, Dikang Gu dikan...@gmail.com wrote: Hi All

Re: How to reduce the Read Latency.

Thanks Aaron! Through the commands top and iostats, I find the IO system is not overloaded yet. So I will check the data model. And how to get the row size of a specific key? Do we have the api yet? Thanks. -- Dikang Gu 0086 - 18611140205 On Sunday, May 22, 2011 at 6:15 PM, aaron morton

What's the valid name format of the column family in cassandra?

What's the naming convention of the column family in cassandra? I did not find this in the wiki yet... Thanks. -- Dikang Gu 0086 - 18611140205

Re: How to programmatically index an existed column?

()); columnFamilyDefinition.addColumnDefinition(bcdf); cluster.updateColumnFamily(new ThriftCfDef(columnFamilyDefinition)); -- Dikang Gu 0086 - 18611140205 On Thursday, May 26, 2011 at 3:16 PM, aaron morton wrote: Please post to one list at a time. Otherwise people may spend their time helping

Re: [RELEASE] 0.8.0

Great! Congratulations! -- Dikang Gu 0086 - 18611140205 On Friday, June 3, 2011 at 10:06 AM, aaron morton wrote: Big thanks to all the contributors and committers :) A - Aaron Morton Freelance Cassandra Developer @aaronmorton http://www.thelastpickle.com

Cannot recover SSTable with version f (current version g).

(IncomingTcpConnection.java:155) at org.apache.cassandra.net.IncomingTcpConnection.run(IncomingTcpConnection.java:93) Do you have any ideas about this? Thanks. -- Dikang Gu 0086 - 18611140205

Re: Cannot recover SSTable with version f (current version g).

Hi Aaron, Thank you for your reply, I've reported a bug on the jira https://issues.apache.org/jira/browse/CASSANDRA-2739 . Since I'm not in the office now, so I will come up with more information and try your methods when I'm in the office again, maybe next Monday. Thanks. -- Dikang Gu 0086

Re: Schema Disagreement

, Cassandra 0.8.1, Ubuntu 10.04 This is for testing only. We'll move to dedicated servers later. Best regards, Yi -- Dikang Gu 0086 - 18611140205

HCassandraInternalException when RangeSlicesQuery using hector.

? Any ideas? Thanks. -- Dikang Gu 0086 - 18611140205

Re: Schema Disagreement

(ThreadPoolExecutor.java:603) at java.lang.Thread.run(Thread.java:636) What does this mean? Thanks. -- Dikang Gu 0086 - 18611140205 On Tuesday, August 2, 2011 at 6:04 PM, aaron morton wrote: Hang on, using brain now. That is triggering a small bug in the code see https://issues.apache.org

Re: Schema Disagreement

] UNREACHABLE: [192.168.1.25] What's the UNREACHABLE? Thanks. -- Dikang Gu 0086 - 18611140205 On Wednesday, August 3, 2011 at 11:28 AM, Jonathan Ellis wrote: Have you seen http://wiki.apache.org/cassandra/FAQ#schema_disagreement ? On Tue, Aug 2, 2011 at 10:25 PM, Dikang Gu dikan...@gmail.com wrote

Cassandra encountered an internal error processing this request: TApplicationError type: 6 message:Internal error

ERROR [com.iw.nebula.dao.simpledb.SimpleDBAdapter] - Cassandra encountered an internal error processing this request: TApplicationError type: 6 message:Internal error processing get_range_slices I did not see anything wrong in the cassandra/system.log What's your suggestions? -- Dikang Gu 0086

Do we have any restrictions on the number of column families in a keyspace?

As per subject. Thanks. -- Dikang Gu 0086 - 18611140205

If I always send the schema change requests to one particular node in the cassandra cluster.

Hi, Can the schema disagreement problem be avoided? Thanks. -- Dikang Gu 0086 - 18611140205

Re: Cassandra encountered an internal error processing this request: TApplicationError type: 6 message:Internal error

, Dikang Gu wrote: Yes, I do find the error log! ERROR [pool-2-thread-63] 2011-08-04 13:23:54,138 Cassandra.java (line 3210) Internal error processing get_range_slices java.lang.NullPointerException I'm using the cassandra-0.8.1, is this a known bug? Thanks. -- Dikang Gu 0086 - 18611140205

How to solve this kind of schema disagreement...

, 192.168.1.25] 06da9aa0-bda8-11e0--9510c23fceff: [192.168.1.27] three different schema versions in the cluster... -- Dikang Gu 0086 - 18611140205

Re: How to solve this kind of schema disagreement...

Perroud ben...@noisette.ch wrote: Based on http://wiki.apache.org/cassandra/FAQ#schema_disagreement, 75eece10-bf48-11e0--4d205df954a7 own the majority, so shutdown and remove the schema* and migration* sstables from both 192.168.1.28 and 192.168.1.27 2011/8/5 Dikang Gu dikan...@gmail.com

Re: How to solve this kind of schema disagreement...

@aaronmorton http://www.thelastpickle.com On 6 Aug 2011, at 22:56, Dikang Gu wrote: I have tried this, but the schema still does not agree in the cluster: [default@unknown] describe cluster; Cluster Information: Snitch: org.apache.cassandra.locator.SimpleSnitch Partitioner

Re: move one node for load re-balancing then it status stuck at Leaving

the cassandra-u...@incubator.apache.org mailing list archive at Nabble.com. -- Dikang Gu 0086 - 18611140205

Re: Cassandra encountered an internal error processing this request: TApplicationError type: 6 message:Internal error

http://www.thelastpickle.com On 5 Aug 2011, at 12:46, Dikang Gu wrote: Sure, I can find the stack trace for some exceptions: ERROR [pool-2-thread-132] 2011-07-23 13:29:04,869 Cassandra.java (line 3210) Internal error processing get_range_slices java.lang.NullPointerException

Re: How to solve this kind of schema disagreement...

: true Could you explain this? If I change the token given to 1.27 to another one, will it help? Thanks. -- Dikang Gu 0086 - 18611140205 On Sunday, August 7, 2011 at 4:14 PM, aaron morton wrote: did you check the logs in 1.27 for errors ? Could you be seeing this ? https://issues.apache.org

Re: How to solve this kind of schema disagreement...

is clean What does this mean? Thanks. -- Dikang Gu 0086 - 18611140205 On Wednesday, August 10, 2011 at 6:42 AM, aaron morton wrote: um. There has got to be something stopping the migration from completing. Turn the logging up to DEBUG before starting and look for messages from

Re: How to solve this kind of schema disagreement...

mismatch. cannot apply. -- Dikang Gu 0086 - 18611140205 On Wednesday, August 10, 2011 at 11:35 AM, Dikang Gu wrote: Hi Aaron, I set the log level to be DEBUG, and find a lot of forceFlush debug info in the log: DEBUG [StreamStage:1] 2011-08-10 11:31:56,345 ColumnFamilyStore.java (line 725

Exception encountered during startup.

) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(DefaultMBeanServerInterceptor.java:312) at com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(JmxMBeanServer.java:482) at org.apache.cassandra.db.ColumnFamilyStore.init(ColumnFamilyStore.java:311) ... 9 more Thanks. -- Dikang Gu 0086

Re: Ignorning message. showing in the log while upgrade to 0.8

: [node2] 05f1ee3b-e063-11e0-97d5-63c2fb3f0ca8: [node1, node3] node3 seems act normal. I saw the JMXPORT has changed since 0.8, is that the reason node was unreachable? thanks! -- Dikang Gu 0086 - 18611140205

Could not reach schema agreement when adding a new node.

(WrappedRunnable.java:30) ... 3 more Thanks. -- Dikang Gu 0086 - 18611140205

Re: [RELEASE] Apache Cassandra 1.0 released

://www.datastax.com -- Jonathan Ellis Project Chair, Apache Cassandra co-founder of DataStax, the source for professional Cassandra support http://www.datastax.com -- Dikang Gu 0086 - 18611140205

Questions about the nodetool ring.

? And is there a way to balance the three nodes? Thanks. -- Dikang Gu 0086 - 18611140205

Re: Questions about the nodetool ring.

#Moving_or_Removing_nodes http://www.datastax.com/docs/0.7/operations/clustering#adding-capacity On Apr 12, 2011, at 11:00 AM, Dikang Gu wrote: I have 3 cassandra 0.7.4 nodes in a cluster, and I get the ring stats: [root@yun-phy2 apache-cassandra-0.7.4]# bin/nodetool -h 192.168.1.28 -p 8090

Re: Questions about the nodetool ring.

? Normal 84.24 MB33.33% 56713727820156410577229101238628035242 10.18.101.213 Up Normal 54.44 MB33.33% 113427455640312821154458202477256070485 Is this correct? Why is the status ? ? Thanks. On Tue, Apr 12, 2011 at 5:43 PM, Dikang Gu dikan...@gmail.com wrote: The 3 nodes

Bootstrap performance.

Hi guys, We have a 100+ nodes cluster, each node has about 400G data, and is running on a flash disk. We are running 2.1.2. When I bring in a new node into the cluster, it introduces significant load to the cluster. For the new node, the cpu usage is 100%, but disk write io is only around

Re: Bootstrap performance.

Coli rc...@eventbrite.com wrote: On Mon, Apr 20, 2015 at 6:08 PM, Dikang Gu dikan...@gmail.com wrote: When I bring in a new node into the cluster, it introduces significant load to the cluster. For the new node, the cpu usage is 100%, but disk write io is only around 50MB/s, while we have 10G

Is 2.1.5 ready for upgrade?

Hi guys, We have some issues with streaming in 2.1.2. We find that there are a lot of patches in 2.1.5. Is it ready for upgrade? Thanks. -- Dikang

Re: Does datastax java driver works with ipv6 address?

t; wrote: > On 11/04/2015 11:17 AM, Dikang Gu wrote: > >> I have ipv6 only cassandra cluster, and I'm trying to connect to it >> using java driver, like: >> >> Inet6Address inet6 = (Inet6Address) >> InetAddress.getByName("2401:db00:0011:60ed:face::00

Question for datastax java Driver

Hi there, Right now, it seems if I add a contact point like this: cluster = Cluster.builder().addContactPoint().build(); When client is connected to the cluster, client will fetch the addresses for all the nodes in the cluster, and try to connect to them. I'm wondering can I disable the

Do I have to use the cql in the datastax java driver?

Hi there, In the datastax java driver, do I have to use the cql to talk to cassandra cluster? Can I still use thrift interface to talk to cassandra? Any reason that we should not use thrift anymore? Thanks. -- Dikang

Does datastax java driver works with ipv6 address?

Hi there, I have ipv6 only cassandra cluster, and I'm trying to connect to it using java driver, like: Inet6Address inet6 = (Inet6Address) InetAddress.getByName("2401:db00:0011:60ed:face::0031:"); cluster = Cluster.builder().addContactPointsWithPorts(Arrays.asList(new

Re: Unable to remove dead node from cluster.

ping. On Mon, Sep 21, 2015 at 11:51 AM, Dikang Gu <dikan...@gmail.com> wrote: > I have tried all of them, neither of them worked. > 1. decommission: the host had hardware issue, and I can not connect to it. > 2. remove, there is not HostID, so the removenode di

Re: Unable to remove dead node from cluster.

The NPE throws when node tried to handleStateLeft, because it can not find the tokens associated with the node, can we just ignore the NPE and continue to remove the endpoint from the ring? On Fri, Sep 25, 2015 at 10:52 AM, Dikang Gu <dikan...@gmail.com> wrote: > @Jeff, yeah, I run the

Re: Unable to remove dead node from cluster.

; I suspect, but am not at all sure, that you have inconsistencies you’re >> not yet aware of (for example, if you expect that you have 100 nodes in the >> cluster, I’m betting that the query above returns 99 on at least one of the >> nodes). If this is the case, please reply so

Unable to remove dead node from cluster.

Hi there, I have a dead node in our cluster, which is a wired state right now, and can not be removed from cluster. The nodestatus shows: Datacenter: DC1 === Status=Up/Down |/ State=Normal/Leaving/Joining/Moving -- Address Load Tokens OwnsHost ID

Re: Unable to remove dead node from cluster.

, Sep 21, 2015 at 11:11 AM, Sebastian Estevez < sebastian.este...@datastax.com> wrote: > Order is decommission, remove, assassinate. > > Which have you tried? > On Sep 21, 2015 10:47 AM, "Dikang Gu" <dikan...@gmail.com> wrote: > >> Hi there, >> >&

Re: Unable to remove dead node from cluster.

> When you run unsafeAssassinateEndpoint, to which host are you connected, > and what argument are you passing? > > Are there other nodes in the ring that you’re not including in the > ‘nodetool status’ output? > > > From: Dikang Gu > Reply-To: "user@cassandra.apache.o

Questions about Counter updates.

Hi there, I have a cluster which has a lot of counter updates. My question is that when I run the `nodetool tpstats`, I see a lot of MutationStage actions but no CounterMutationStage stats. I'm wondering is it normal or is it something I should worry about? I'm using Cassandra 2.1.8 and the C

How to measure the write amplification of C*?

Hello there, I'm wondering is there a good way to measure the write amplification of Cassandra? I'm thinking it could be calculated by (size of mutations written to the node)/(number of bytes written to the disk). Do we already have the metrics of "size of mutations written to the node"? I did

Re: How to measure the write amplification of C*?

ot;, but as sizes highly >>> > depends on the structure I think I would probably give it a try using >>> CCM ( >>> > https://github.com/pcmanus/ccm) or some test cluster with 'production >>> > like' >>> > setting and schema. You can write a row, flush

Compaction Filter in Cassandra

Hello there, RocksDB has the feature called "Compaction Filter" to allow application to modify/delete a key-value during the background compaction. https://github.com/facebook/rocksdb/blob/v4.1/include/rocksdb/options.h#L201-L226 I'm wondering is there a plan/value to add this into C* as well?

Re: Compaction Filter in Cassandra

ng test it out, I'd love to hear from you. > > On Sat, Mar 12, 2016 at 5:12 AM Marcus Eriksson <krum...@gmail.com> wrote: > >> We don't have anything like that, do you have a specific use case in mind? >> >> Could you create a JIRA ticket and we can discuss th

Re: Compaction Filter in Cassandra

Fyi, this is the jira, https://issues.apache.org/jira/browse/CASSANDRA-11348 . We can move the discussion to the jira if want. On Thu, Mar 17, 2016 at 11:46 AM, Dikang Gu <dikan...@gmail.com> wrote: > Hi Eric, > > Thanks for sharing the information! > > We al

Re: How to measure the write amplification of C*?

docs/jesd219a >> >> >> Matt Kennedy >> >> Sr. Product Manager, DSE Core >> >> matt.kenn...@datastax.com | Public Calendar <http://goo.gl/4Ui04Z> >> >> *DataStax Enterprise - the database for cloud applications.* >> >> On Th

Re: Counter values become under-counted when running repair.

4 March 2016 at 23:20:55, Dikang Gu (dikan...@gmail.com) wrote: > > @Aleksey, we are writing to cluster with CL = 2, and reading with CL = 1. > And overall we have 6 copies across 3 different regions. Do you have > comments about our setup? > > During the repair, the counter value

Re: Counter values become under-counted when running repair.

ata centers, but normally apps try to issue requests to a local data > center for performance. Having to ping all data centers on all requests to > achieve a quorum seems a bit excessive. > > Can you advise us on your thinking when you selected RF=2? > > > -- Jack Krupansky &g

Re: Counter values become under-counted when running repair.

> > -- > AY > > On 24 March 2016 at 06:17:27, Dikang Gu (dikan...@gmail.com) wrote: > > Hello there, > > We are experimenting Counters in Cassandra 2.2.5. Our setup is that we > have > 6 nodes, across three different regions, and in each region, the > replication fact

Re: Counter values become under-counted when running repair.

Hi Aleksey, do you get a chance to take a look? Thanks Dikang. On Thu, Mar 24, 2016 at 10:30 PM, Dikang Gu <dikan...@gmail.com> wrote: > @Aleksey, sure, here is the jira: > https://issues.apache.org/jira/browse/CASSANDRA-11432 > > Thanks! > > On Thu, Mar 24, 2016 at 5:

Re: Dropped messages on random nodes.

Btw, the C* version is 2.2.5, with several backported patches. On Sun, Jan 22, 2017 at 10:36 PM, Dikang Gu <dikan...@gmail.com> wrote: > Hello there, > > We have a 100 nodes ish cluster, I find that there are dropped messages on > random nodes in the cluster, which caused er

Dropped messages on random nodes.

Hello there, We have a 100 nodes ish cluster, I find that there are dropped messages on random nodes in the cluster, which caused error spikes and P99 latency spikes as well. I tried to figure out the cause. I do not see any obvious bottleneck in the cluster, the C* nodes still have plenty of

Re: [Multi DC] Old Data Not syncing from Existing cluster to new Cluster

Have you run 'nodetool rebuild dc_india' on the new nodes? On Tue, Jan 24, 2017 at 7:51 AM, Benjamin Roth wrote: > Have you also altered RF of system_distributed as stated in the tutorial? > > 2017-01-24 16:45 GMT+01:00 Abhishek Kumar Maheshwari

Re: Slow performance after upgrading from 2.0.9 to 2.1.11

We are seeing huge cpu regression when upgrading one of our 2.0.16 cluster to 2.1.14 as well. The 2.1.14 node is not able to handle the same amount of read traffic as the 2.0.16 node, actually, it's less than 50%. And in the perf results, the first line could go as high as 50%, as we turn up the

Re: Slow performance after upgrading from 2.0.9 to 2.1.11

-- so i'm not sure how "hacky" it is if it > works.. > > best, > kjellman > > > On Nov 8, 2016, at 11:31 AM, Dikang Gu <dikan...@gmail.com<mailto:dik > an...@gmail.com>> wrote: > > This is very expensive: > > "MessagingService-

Re: A difficult data model with C*

Agree, change the last_time to be descending order will help, you can also TTL the data, so that the old records will be purged by Cassandra. --Dikang. On Mon, Nov 7, 2016 at 10:39 PM, Alain Rastoul wrote: > On 11/08/2016 03:54 AM, ben ben wrote: > >> Hi guys, >>

Re: operation and maintenance tools

Hi Simon, For a 10 nodes cluster, Cassandra nodetool should be enough for most C* operations and maintenance, unless you have some special requirements. For the memory, you can check what's your JVM settings, and the gc log for JVM usage. --Dikang. On Mon, Nov 7, 2016 at 7:25 PM,

Re: Node replacement failed in 2.2

nodetool gossipinfo shows for endpoint /2401:db00:2130:4091: > face:0:13:0 ? Does it contain the TOKENS attribute? If it's missing, is > it only missing on this node or other nodes as well? > > 2016-11-18 17:02 GMT-02:00 Dikang Gu <dikan...@gmail.com>: > >> Hi, I encountere

Node replacement failed in 2.2

Hi, I encountered couple times that I could not replace a down node due to error: 2016-11-17_19:33:58.70075 Exception (java.lang.RuntimeException) encountered during startup: Could not find tokens for /2401:db00:2130:4091:face:0:13:0 to replace 2016-11-17_19:33:58.70489 ERROR 19:33:58 [main]:

Re: Node replacement failed in 2.2

ith more details/context (such as > gossip debug logs of replacement and other nodes, and if the replacement > node had the same or different ip as the original node since they are > slightly different code paths after #8523). > > 2016-11-18 19:07 GMT-02:00 Dikang Gu <dikan...@gmail.c

Re: Exceptions when upgrade from 2.1.14 to 2.2.5

9 PM, Jeff Jirsa <jji...@apache.org> wrote: > > > On 2017-04-18 18:57 (-0700), Dikang Gu <dikan...@gmail.com> wrote: > > Hello there, > > > > We are upgrading one of our cluster from 2.1.14 to 2.2.5, but cassandra > had > > problems replaying the commi

Exceptions when upgrade from 2.1.14 to 2.2.5

Hello there, We are upgrading one of our cluster from 2.1.14 to 2.2.5, but cassandra had problems replaying the commit logs... Here is the exception, does anyone experience similar before? 2017-04-19_00:22:21.69943 DEBUG 00:22:21 [main]: Finished reading

Re: Cassandra 2.1.13: Using JOIN_RING=False

1. The coordinator still store system data and hints, but they should not store any user data since they are not part of ring. 2. We are using coordinator for thrift client. For cql based drivers, they needs to talk to nodes in the ring, so I think coordinator mode won't work for them. -Dikang

Definition of QUORUM consistency level

Hello there, We have some use cases are doing consistent read/write requests, and we have 4 replicas in that cluster, according to our setup. What's interesting to me is that, for both read and write quorum requests, they are blocked for 4/2+1 = 3 replicas, so we are accessing 3 (for write) + 3

Re: Definition of QUORUM consistency level

To me, CL.TWO and CL.THREE are more like work around of the problem, for example, they do not work if the number of replicas go to 8, which does possible in our environment (2 replicas in each of 4 DCs). What people want from quorum is strong consistency guarantee, as long as R+W > N, there are

Re: Definition of QUORUM consistency level

ase. > > Justin > > On Fri, 9 Jun 2017 at 12:29 Dikang Gu <dikan...@gmail.com> wrote: > >> Hello there, >> >> We have some use cases are doing consistent read/write requests, and we >> have 4 replicas in that cluster, according to our setup. >

Re: Definition of QUORUM consistency level

work. >>> Also the benefit of this is dubious, since 3/4 nodes still need to be >>> accessible to perform writes. I'd also guess that it's unlikely to provide >>> any significant performance increase. >>> >>> Justin >>> >>> On Fri, 9 Jun 2017 a

Commitlog without header

Hello, In our production cluster, we had multiple times that after a *unclean* shutdown, cassandra sever can not start due to commit log exceptions: 2017-09-17_06:06:32.49830 ERROR 06:06:32 [main]: Exiting due to error while processing commit log during initialization. 2017-09-17_06:06:32.49831

Re: Row Cache hit issue

Hi Peng, C* periodically saves cache to disk, to solve cold start problem. If row_cache_save_period=0, it means C* does not save cache to disk. But the cache is still working, if it's enabled in table schema, just the cache will be empty after restart. --Dikang. On Tue, Sep 19, 2017 at 8:27 PM,

Re: Commitlog without header

I will try the fixes, thanks Benjamin & Jeff. On Thu, Sep 21, 2017 at 8:55 PM, Jeff Jirsa <jji...@gmail.com> wrote: > https://issues.apache.org/jira/plugins/servlet/mobile# > issue/CASSANDRA-11995 > > > > -- > Jeff Jirsa > > > On Sep 19, 2017, at 4:36

Re: Cassandra 3.11.0 compaction attempting impossible to complete compactions

What's the compaction strategy are you using? level compaction or size tiered compaction? On Fri, Oct 13, 2017 at 4:31 PM, Bruce Tietjen < bruce.tiet...@imatsolutions.com> wrote: > I hadn't noticed that is is now attempting two impossible compactions: > > > id

Re: run Cassandra on physical machine

@Peng, how many network interfaces do you have on your machine? If you just have one NIC, you probably need to wait this storage port patch. https://issues.apache.org/jira/browse/CASSANDRA-7544 . On Thu, Dec 7, 2017 at 7:01 AM, Oliver Ruebenacker wrote: > > Hello, > >

Re: NVMe SSD benchmarking with Cassandra

Do you have some detailed benchmark metrics? Like the QPS, Avg read/write latency, P95/P99 read/write latency? On Fri, Jan 5, 2018 at 5:57 PM, Justin Sanciangco wrote: > I am benchmarking with the YCSB tool doing 1k writes. > > > > Below are my server specs > > 2

Re: New token allocation and adding a new DC

I fixed the new allocation algorithm in non bootstrap case, https://issues.apache.org/jira/browse/CASSANDRA-13080?filter=-2, the fix is in 3.12+, but not in 3.0. On Wed, Jan 24, 2018 at 9:32 AM, Oleksandr Shulgin < oleksandr.shul...@zalando.de> wrote: > On Thu, Jan 18, 2018 at 5:19 AM, kurt

Re: Nodes show different number of tokens than initially

What's the partitioner you use? We have logic to prevent duplicate tokens. private static Collection adjustForCrossDatacenterClashes(final TokenMetadata tokenMetadata, StrategyAdapter strategy, Collection tokens) { List filtered = Lists.newArrayListWithCapacity(tokens.size()); for

Re: Rocksandra blog post

ables + compaction strategies > or it was changed somehow? > > > Best, > > Kyrill > > -- > *From:* Dikang Gu <dikan...@gmail.com> > *Sent:* Monday, March 5, 2018 8:26 PM > *To:* d...@cassandra.apache.org; cassandra > *Subject:* Rocksandra

Rocksandra blog post

As some of you already know, Instagram Cassandra team is working on the project to use RocksDB as Cassandra's storage engine. Today, we just published a blog post about the work we have done, and more excitingly, we published the benchmark metrics in AWS environment. Check it out here:

Re: Secondary Index Cleanup

What's the C* version do you use? Sounds like the secondary index is very out of sync with the parent cf. On Fri, Mar 2, 2018 at 6:23 AM, Malte Krüger wrote: > hi, > > we have an CF which is about 2 gb in size, it has a seondary index on one > field (UUID). > >

Re: Aborting a decommission

Tim, you can restart a node in decommission mode, after that, I will start as a normal node. But it will be nice to have a tool to do that. On Wed, Feb 20, 2019 at 2:32 PM Timothy Palpant wrote: > Hi! > > I was wondering if it is possible to abort/cancel a decommission that was > initiated with