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Showing posts with the label Job scheduling

HBASE Vs. RDBMS Top Differences You can Unlock Now

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HBASE in the Big data context has a lot of benefits over RDBMS. The listed differences below make you understandable why HBASE is popular in Hadoop (or Bigdata) platform. Let us check one by one quickly. HBASE Vs. RDBMS Differences Random Accessing HBase handles a large amount of data that is store in a distributed manner in the column-oriented format while RDBMS is systematic storage of a database that cannot support a random manner for accessing the database. Database Rules RDBMS strictly follow Codd's 12 rules with fixed schemas and row-oriented manner of database and also follow ACID properties. HBase follows BASE properties and implement complex queries. Secondary indexes, complex inner and outer joins, count, sum, sort, group, and data of page and table can easily be accessible by RDBMS. Storage From small to medium storage application there is the use of RDBMS that provide the solution with MySQL and PostgreSQL whose size increase with concurrency and performance.  Codd'

UNIX Shell Scripting and Job Scheduling

Shell scripting and job scheduling are two major tasks for any UNIX developer. I am presenting here essential commands that need for any developer. Shell Scripts commands Shell script basics Variables in shell scripts Kornshell arithmetic  Commands for scripts Flow control, tests, and expressions Making Scripts Friendlier Functions Pipes and Shell Scripts Scripts with awk and/or sed Job Scheduling commands bg and at cron Read here