Technical notes

Sunday, April 28, 2019

tmux

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list sessions tmux ls attach tmux a name detach ctrl+b d ctrl+b a name split horiz ctrl+b " split vert ctrl+b % console c...
Monday, July 17, 2017

HIVE load csv text file

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First column must not contain spaces, otherwise it will load NULL! Intermediate columns can contain spaces, it is suggested to load them as...
Tuesday, May 9, 2017

Hive QL vs SQL

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No "IN" Clause Zero-based indexing "AS" aliasing for columns only SQL HIVE QL ORDER BY SELECT * FROM...
Tuesday, May 2, 2017

Mercurial commands

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Create a branch hg bookmark [name] Reset local changes hg revert --all Fetch latest code hg pull Fetch latest code and update local c...
Friday, September 16, 2016

Integer overflow

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Integer overflow in JVM can lead to negative, zero and positive values, i.e. can everything: scala> val x = 1 + (Int.MaxValue - 1) / 2 ...
Thursday, August 11, 2016

Graph based user behavior modeling

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http://www.cs.cmu.edu/~abeutel/kdd2015_tutorial/
Thursday, August 4, 2016

Check scalastyle

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Maven - checks only main sources: mvn scalastyle:check Sbt check main: sbt scalastyle Sbt check test: sbt test:scalastyle
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