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Show HN: EventQL – Open-source distributed SQL analytics database in C++11

90 点作者 paulasmuth将近 9 年前

7 条评论

jimktrains2将近 9 年前
Is this similar to Apache Drill[0]&#x2F;Google Dremel[1] (BigQuery[2])? One differences is that it seems to be able to do mutations to data, not simple appends.<p>[0] <a href="https:&#x2F;&#x2F;drill.apache.org&#x2F;" rel="nofollow">https:&#x2F;&#x2F;drill.apache.org&#x2F;</a> [1] <a href="http:&#x2F;&#x2F;research.google.com&#x2F;pubs&#x2F;pub36632.html" rel="nofollow">http:&#x2F;&#x2F;research.google.com&#x2F;pubs&#x2F;pub36632.html</a> [2] <a href="https:&#x2F;&#x2F;cloud.google.com&#x2F;bigquery&#x2F;" rel="nofollow">https:&#x2F;&#x2F;cloud.google.com&#x2F;bigquery&#x2F;</a>
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babas将近 9 年前
Looks great! I&#x27;ve just gotten a single instance up and running. Really simple to set up. It seems almost exactly what We&#x27;ve been looking for! Some background: We have been evaluating different time series databases for use with sensor readings (We probably need to ingest something on the order of 100,000-200,000 samples&#x2F;s per cluster). The data is from physical sensors like temperature, level, pressure etc. Where all the data is in the form of tag(string)|datetime(ms)|value(decimal).<p>Have you done any comparisons to other similar software like influxdb, Cassandra, etc? Especially ingestion rate and disk usage.<p>What kind of pricing can we expect on Managed Hosting?<p>We are currently leaning towards Influxdb but the cluster licensing stuff they are doing really made us think twice.
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dtheodor将近 9 年前
Why EventQL over other distributed columnar-storage based databases like Redshift, Vertica, Citus, or Hadoop-based ones like Impala and Presto. What does EventQL do better?
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nwrk将近 9 年前
looks good [0], thank you<p>can anyone comment on data disk usage ?<p>[0] docs - <a href="http:&#x2F;&#x2F;eventql.io&#x2F;documentation&#x2F;" rel="nofollow">http:&#x2F;&#x2F;eventql.io&#x2F;documentation&#x2F;</a>
ddorian43将近 9 年前
Why not build a bigtable-cassandra fusion row-store too ? Since updates are async and all nodes are the same (cassandra) while the data model is sorted-by-primary-key (bigtable) and the schema fixed (low cost in storing tuples) and sql available (easier for devs).
buremba将近 9 年前
How can we import CSV dataset? HTTP API for insert returns this error message: expected JSON_OBJECT_BEGIN, got: JSON_OBJECT_BEGIN. The GROUP BY query in homepage scans 1.8B rows and only takes 1.5 seconds which is great but how many nodes used in that setup?
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ktamura将近 9 年前
As a maintainer of the projec,t it&#x27;s cool to see the Fluentd plugin in the repo: <a href="https:&#x2F;&#x2F;github.com&#x2F;eventql&#x2F;fluent-plugin-eventql" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;eventql&#x2F;fluent-plugin-eventql</a>