Spark patch #139
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Spark patch #139
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nickitat
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Sep 23, 2023
spark/.gitkeep
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looks like this file could be removed
| StructField("RefererHash", LongType, nullable = false), | ||
| StructField("URLHash", LongType, nullable = false), | ||
| StructField("CLID", IntegerType, nullable = false)) | ||
| ) |
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there is no way to create an index, right?
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Yes, no index support
https://spark.apache.org/docs/1.4.0/api/java/org/apache/spark/sql/types/StructField.html
| val timeElapsed = (end - start) / 1000000 | ||
| println(s"Query $itr | Time: $timeElapsed ms") | ||
| itr += 1 | ||
| }) |
spark/benchmark.sh
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| # For Spark3.0.1 installation: | ||
| # wget --continue https://downloads.apache.org/spark/spark-3.0.1/spark-3.0.1-bin-hadoop2.7.tgz | ||
| # tar -xzf spark-3.0.1-bin-hadoop2.7.tgz |
spark/benchmark.sh
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| wget --continue 'https://datasets.clickhouse.com/hits_compatible/hits.tsv.gz' | ||
| #gzip -d hits.tsv.gz | ||
| chmod 777 ~ hits.tsv | ||
| $HADOOP_HOME/bin/hdfs dfs -put hits.tsv / |
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But how do I set this variable?
$ echo $HADOOP_HOME
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I cannot find it:
find spark-3.5.0-bin-hadoop3 -name hdfs
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Added Spark & HDFS deployment details in benchmark.sh script. Added example of log.txt file from HPC-environment. |
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The script Should be: |
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Updated Spark&HDFS directories creation |
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I started editing your script to make it self-sufficient, but after fixing the errors, it does not work.
Then: PS. The current version of the script is: |
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@alexey-milovidov We assume that there is passless ssh connection defined on localhost (in other words, if we will use Please clarify the next details:
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I do it in this way: create a fresh VM on AWS and run the commands one by one. |
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@DoubleMindy, let's continue. |
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Added full HDFS deployment, on "fresh" VM there is no problem with file putting |
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Sorry, but the script still does not reproduce. I'm copy-pasting the commands one by one, and getting this: |
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We need a reproducible script to install Spark. It should run by itself. |
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@DoubleMindy It would be appreciated if you continue with this, but for now I'll close the PR (for cleanup reasons). |
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I'm very interested in the results of Spark, but we need at least one person who can install it. If a system cannot be easily installed it is a game over. |
| SELECT TraficSourceID, SearchEngineID, AdvEngineID, CASE WHEN (SearchEngineID = 0 AND AdvEngineID = 0) THEN Referer ELSE '' END AS Src, URL AS Dst, COUNT(*) AS PageViews FROM hits WHERE CounterID = 62 AND EventDate >= '2013-07-01' AND EventDate <= '2013-07-31' AND IsRefresh = 0 GROUP BY TraficSourceID, SearchEngineID, AdvEngineID, Src, Dst ORDER BY PageViews DESC LIMIT 10; | ||
| SELECT URLHash, EventDate, COUNT(*) AS PageViews FROM hits WHERE CounterID = 62 AND EventDate >= '2013-07-01' AND EventDate <= '2013-07-31' AND IsRefresh = 0 AND TraficSourceID IN (-1, 6) AND RefererHash = 3594120000172545465 GROUP BY URLHash, EventDate ORDER BY PageViews DESC LIMIT 10; | ||
| SELECT WindowClientWidth, WindowClientHeight, COUNT(*) AS PageViews FROM hits WHERE CounterID = 62 AND EventDate >= '2013-07-01' AND EventDate <= '2013-07-31' AND IsRefresh = 0 AND DontCountHits = 0 AND URLHash = 2868770270353813622 GROUP BY WindowClientWidth, WindowClientHeight ORDER BY PageViews DESC LIMIT 10; | ||
| SELECT DATE_TRUNC('minute', EventTime) AS M, COUNT(*) AS PageViews FROM hits WHERE CounterID = 62 AND EventDate >= '2013-07-14' AND EventDate <= '2013-07-15' AND IsRefresh = 0 AND DontCountHits = 0 GROUP BY DATE_TRUNC('minute', EventTime) ORDER BY DATE_TRUNC('minute', EventTime) LIMIT 10; |
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Here, the OFFSET clause was removed, which is incorrect.
It should be either LIMIT 1010 to get the closest result or subqueries with ROW_NUMBER.
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