Knowledge is Power
The current version of Ambari (2.4.2) does not provide an option to move the Storm Nimbus service from one node to another. However, the steps mentioned the following workaround can be used to perform this. Workaround To move Nimbus service...
NOTE It is not safe to move components like Journal node or Zookeeper. This method is to be used only for components like Storm, Kafka , Falcon or Flume etc. Following steps would help in moving components from one Node...
In case you would like to move JournalNode service to another host, here are the steps to do so: Put HDFS in safemode su hdfs c ‘hdfs dfsadmin fs hdfs://<active node>:8020 safemode enter’ Execute a save namespace of the...
Hive Lookup what killed Hive server $ grep –color=always -nr -B 1 ‘Exception|Service:HiveServer2 is started|java.lang.OutOfMemoryError’ /var/log/hive/hiveserver2.log | less -N Above command looks up the log file for exceptions and startup of hive and print one line above the search term....
Source: https://www.winehq.org/announce/2.0 Enable Retina mode for Wine apps – The macOS graphics driver supports a high-resolution (“Retina”) rendering mode. It can be enabled by setting “RetinaMode” to “Y” under HKCU\Software\Wine\Mac Driver. Related posts: Changing Wine key mappings on Mac...
Python code below, #!/usr/bin/env python from lxml import html import requests import csv import sys import os import humanize # Helper URL # http://python-docs.readthedocs.io/en/latest/scenarios/scrape.html curr_arg = 1 for arg in sys.argv: print “Argument ” + str(curr_arg) + “: ” +...
Setting JAVA version Coming soon… 1. Setting JAVA version Method 1 press:CTRL + SHIFT + A (For Mac command + shift + A) type: java compiler press: ENTER In the setting window set the Target bytecode to 1.8 Method...
Bash tricks Check bash version in script if ((BASH_VERSINFO[0] < 4)) then echo “Sorry, you need at least bash-4.0 to run this script.” exit 1 fi Reading columns from a file in bash array table_collection=( $(cut -d $’\t’ -f1...
What? An older bash version? Are you seeing and still not believing on something like below, MacBook-Pro:~$ bash –version GNU bash, version 3.2.57(1)-release (x86_64-apple-darwin16) Copyright (C) 2007 Free Software Foundation, Inc. Well that is my MBP as of Mar 29,...
What? Replacing the invalid code signature in mac apps with a new one How? Example: sudo codesign –force –sign – /Applications/DBeaver.app Symptoms MacOS gives messages like – “Dbeaver” is damaged and can’t be opened. You should move it to the Trash. ...
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