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[expand - 1 more] - [EXTERNAL] Re: cold vs hot data - Cassandra - [mail # user]
...Also for the record, I remember Datastax having something called TieredStorage that does move data around (folders/disk volume) based on data age.To be checkedOn Mon, Sep 17, 2018 at 10:23 P...
   Author: DuyHai Doan , 2018-09-17, 20:26
[expand - 1 more] - Using CDC Feature to Stream C* to Kafka (Design Proposal) - Cassandra - [mail # user]
...The biggest problem of having CDC working correctly in C* is thededuplication issue.Having a process to read incoming mutation from commitlog is not that hard,having to dedup them through N ...
   Author: DuyHai Doan , 2018-09-12, 09:18
[expand - 1 more] - A blog about Cassandra in the IoT arena - Cassandra - [mail # user]
...No what I meant by infinite partition is not auto sub-partitioning, even atserver-side. Ideally Cassandra should be able to support infinite partitionsize and make compaction, repair and str...
   Author: DuyHai Doan , 2018-08-24, 16:06
full text search on some text columns - Cassandra - [mail # user]
...I had SASI in mind before stopping myself from replying to this thread.Actually the OP needs to index clustering column and partition key, and asfar as I remember, I've myself opened a JIRA ...
   Author: DuyHai Doan , 2018-07-31, 19:43
which driver to use with cassandra 3 - Cassandra - [mail # user]
...Spring data cassandra is so so ... It has less features (at last at thetime I looked at it) than the default Java driverFor driver, right now most of people are using Datastax's onesOn Fri, ...
   Author: DuyHai Doan , 2018-07-20, 13:51
[expand - 1 more] - default_time_to_live vs TTL on insert statement - Cassandra - [mail # user]
...To set TTL on a column only and not on the whole CQL row, use UPDATEinstead:UPDATE  USING TTL xxx SET = WHERE partition=yyyOn Thu, Jul 12, 2018 at 2:42 PM, Nitan Kainth  wrote:>...
   Author: DuyHai Doan , 2018-07-12, 13:36
[ANNOUNCE] LDAP Authenticator for Cassandra - Cassandra - [mail # user]
...Super great, thank you for this contribution Kurt!On Thu, Jul 5, 2018 at 1:49 PM, kurt greaves  wrote:> We've seen a need for an LDAP authentication implementation for Apache> Cas...
   Author: DuyHai Doan , 2018-07-05, 11:54
Write performance degradation - Cassandra - [mail # user]
...Maybe the disk I/O cannot keep up with the high mutation rate ?Check the number of pending compactionsOn Sun, Jun 17, 2018 at 9:24 AM, onmstester onmstester wrote:> Hi,>> I was doin...
   Author: DuyHai Doan , 2018-06-18, 11:55
Data Proxy for Cassandra - Cassandra - [mail # user]
...Hello ChidamberWhen you said "In addition, the data proxy is distributed based onconsistent hashing and using gossip between data proxy nodes to keep thecached data unique (per node) and con...
   Author: DuyHai Doan , 2018-06-11, 15:53
[expand - 1 more] - what's the read cl of list read-on-write operations? - Cassandra - [mail # user]
...The inconsistency scenario you describe can occur for sureNow repair (read repair, consistent read + weekly repair) is there to fix it"Why Cassandra do not read from cluster with somehow rea...
   Author: DuyHai Doan , 2018-04-20, 13:56