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[hadoop]
[[hdfs_clusters]]
[[[default]]]
ssl_cert_ca_verify = false
[beeswax]
[[ssl]]
validate=false
[impala]
[[ssl]]
validate=false

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#!/usr/bin/env python

import sys, socket, logging

def check_dns(hostname):
    try:
        forward           = socket.gethostbyname(hostname)
        (reverze,_,[ip])  = socket.gethostbyaddr(forward)
        is_ok             = 'yes' if hostname==reverze else 'no'
        return { 'hostname': hostname, 'forward4': forward, 'reverse': reverze, 'status': is_ok }

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hadoop jar /opt/cloudera/parcels/CDH/lib/solr/contrib/mr/search-mr-job.jar \
org.apache.solr.hadoop.HdfsFindTool \
-find /user/spark/applicationHistory \
-mtime +60 | xargs hdfs dfs -rm -r -skipTrash

### MUST BE A BETTER WAY

hadoop jar /opt/cloudera/parcels/CDH/lib/solr/contrib/mr/search-mr-job.jar org.apache.solr.hadoop.HdfsFindTool \
-find /tmp/logs/ \
-type d  | awk -F '/' '{print $6}' | sort | uniq > users

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COMMAND='hadoop jar /opt/cloudera/parcels/CDH/lib/solr/contrib/mr/search-mr-job.jar org.apache.solr.hadoop.HdfsFindTool'

${COMMAND} -find /tmp/ -type f -mtime +30

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let rec range_aux n acc =>
  switch (n, acc) {
    | (0, acc) => acc
    | (n, acc) => range_aux (n-1) [(n-1), ...acc]
  };
let range x => range_aux x [];

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user=> Integer/MAX_VALUE
2147483647
user=> (type Integer/MAX_VALUE)
java.lang.Integer
user=> (+ Integer/MAX_VALUE 1)
2147483648
user=> (type (+ Integer/MAX_VALUE 1))
java.lang.Long
user=> Long/MAX_VALUE
9223372036854775807

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Starting with ReasonML for backend devs

Background

Bucklescript

BuckleScript is a backend for the OCaml compiler which emits JavaScript. It works 
with both vanilla OCaml and Reason, the whole compiler is compiled into JS (and ASM) 
so that you can play with it in the browser.

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biolab.chqrncngckmp.eu-central-1.rds.amazonaws.com:1433

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https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/SQLServer.Procedural.Importing.html

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Get-AppxPackage *3dbuilder* | Remove-AppxPackage
Get-AppxPackage *windowsalarms* | Remove-AppxPackage
Get-AppxPackage *windowscalculator* | Remove-AppxPackage
Get-AppxPackage *windowscommunicationsapps* | Remove-AppxPackage
Get-AppxPackage *windowscamera* | Remove-AppxPackage
Get-AppxPackage *officehub* | Remove-AppxPackage
Get-AppxPackage *skypeapp* | Remove-AppxPackage
Get-AppxPackage *getstarted* | Remove-AppxPackage
Get-AppxPackage *zunemusic* | Remove-AppxPackage
Get-AppxPackage *windowsmaps* | Remove-AppxPackage