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Questions tagged [kairosdb]

KairosDB is a fast distributed scalable time series database written on top of Cassandra. It was initially a rewrite of the original OpenTSDB project, but it evolved to a different system for which data management, data processing, and visualization are fully separated.

KairosDB runs with java 1.6 or later.

KairosDB 0.9.4 Documentation

More information about OpenTSDB

57 questions
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Big data with very fast access

I am facing to a problem: database for process plants. There are up to 50,000 sensors at sampling rate of 50 ms. All measured values need to be stored at least 3 years and must support real-time queries (i.e. users can see historical data with delay…
duong_dajgja
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Mutation of 17076203 bytes is too large for the maxiumum size of 16777216

I have "commitlog_segment_size_in_mb: 32" in the cassandra settings but the error below indicates maximum size is 16777216, which is about 16mb. Am I looking at the correct setting for fixing the error below? I am referring to this setting based on…
vrtx54234
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Directly query kairosdb column families

I'm trying to pull some time series data from Cassandra. The data is being put there by an external application and it is using KairosDB to write the data (based on OpenTSDB). I don't have the option of putting the KairosDB libraries into the…
Jeff
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KairosDB TAG NAMES

Is there a way to get the tags from a specific metric name ? When I make the GET request I get all the possible TAG NAMES that exist in the database. But at the localhost when I try to group the metric by tags I see that the tags, which are…
Βασιλης Ιωσηφιδης
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Too many open files - KairosDB

on running this query: { "start_absolute":1359695700000, "end_absolute":1422853200000, …
Bharthan
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How can you determine how much disk space a particular KairosDB/OpenTSDB metric is taking up?

Is there a quick way to determine how much disk space a particular metric is taking up?
Bharthan
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Failover and Replication in 2-node Cassandra cluster

I run KairosDB on a 2-node Cassandra cluster, RF = 2, Write CL = 1, Read CL = 1. If 2 nodes are alive, client sends half of data to node 1 (e.g. metric from METRIC_1 to METRIC_5000) and the other half of data to node 2 (e.g. metric from METRIC_5001…
duong_dajgja
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Which one is faster, OpenTSDB or KairosDB?

OpenTSDB is super fast. KairosDB is known as re-write of OpenTSDB and as claimed that it's even faster than OpenTSDB (see here). However I did some tests with a pseudo-distributed cluster (1 master, 1 slave, locally) for OpenTSDB and 1-node cluster…
duong_dajgja
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3
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Is there any row key partition limit in KairosDB

KairosDB built in top of cassandra, but the cassandra have row key partition limit, Is that partition limit is applicable to this also?
Charan Adabala
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OpenTSDB vs KairosDB for HBase?

My Hadoop stack has HBase. Now I have to decide between OpenTSDB vs KairosDB as a Time Series DB over HBase. I know the fact that KairosDB is build over Cassandra and also works with HBase. Also have gone through below links that highlight…
user3705997
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KairosDB failed to discover other Cassandra nodes in ring with Hector client

I have a multi-node Casssandra cluster (2.2.6) and a separate KairosDB server (1.1.1-1). In KairosDB, I configured it with two Cassandra seed nodes and have it auto discover other Cassandra nodes in the ring. After tuning KairosDB log level to…
Cary Li
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Java 8 - Save multiple object list from Kairosdb into a csv file

I have a requirement to create a csv file from all the metric values from Kairosdb. The kairosdb UI already has a save as feature but it doesn't have a metric name in the exported file. Also we can't export multiple metrics into a single file. The…
lalithark
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A new user of KairosDB get an exception on startup

While I'm trying to start up KairosDB I keep running into the exception in the below quote. I'm sure cassdrandhost config is correct. How to I fix it? [Hector.me.prettyprint.cassandra.connection.CassandraHostRetryService-1] ERROR…
liangbo.x
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Querying in KairosDB/OpenTSDB

I have 3 million records with entries like: ~/Abharthan/kairosdb$ head -10 export.txt {"name": "meterreadings", "timestamp":"1359695700","tags":…
Bharthan
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Bulk insert Data in KairosDB

In this link it is given that we can import data in KairosDB as: this link >bin/kairosdb.sh import -f export.txt If you happened to compress the export you can pipe it back into the system like this: >gzip -dc export.gz | bin/kairosdb.sh import I…
Bharthan
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