current epoch

Unix epoch Time, also known as POSIX time/epoch time, is the total number of seconds from 0 seconds from January 1, 1970 0:0 UTC to the present, excluding leap seconds. A positive value represents 1970, and a negative value indicates before

Concept:UNIX timestamp: Unix timestamp (UNIX epoch, Unix time, POSIX time, or Unix timestamp)It is the number of seconds that have elapsed since January 1, January 1, 1970 (midnight UTC/GMT), regardless of the leap second.The UNIX timestamp 0

The device exception in the cluster (the addition and deletion of the exception OSD) can result in inconsistent data between the various copies of the PG, and data recovery is required so that all replicas are in a consistent state.First, the OSD

Lola 2017-03-07 12:20 Posted in Technical Guide 2 990 Last week, Yoich published a blog post detailing my "minimization of penalty conditions" and formally demonstrated the safety and vitality offered by "minimizing penalty conditions". This is a

Lola 2017-03-07 12:20 Posted in Technical Guide 2 990 Last week, Yoich published a blog post detailing my "minimization of penalty conditions" and formally demonstrated the safety and vitality offered by "minimizing penalty conditions". This is a

Original source: http://rdc.taobao.com/blog/cs/?p=162This paper mainly introduces the election of zookeeper Server leader in zookeeper, zookeeper leader algorithm (mainly fast Paxos) in the election Paxos. Here are two main types: Leaderelection and

This article belongs to the Distributed System Learning Note Series, the previous note collated the Paxos algorithm, this article belongs to the fourth chapter of the original book, combing zookeeper target characteristics and Zab protocol. 1.

This article uses Q & A to discuss the basic concepts of time with you beforeOne, what is time?The problem is so complicated, I don't know if it's a physics, cosmology, or thermodynamics or philosophical issue, I just want to look at the concept of

Release Notes: Early 2016-07-19 morning Draft In Hadoop 1.x, Namenode is a single point of failure for a cluster, and once the namenode fails, the entire cluster will be unavailable, restarted, or a new namenode can be started to recover from. It is

The time module provides a variety of functions and ways to identify the timing value, there are two main formats for identifying time: one is identified as a timestamp, which is the number of seconds from January 1, 1970 0:0, 0 seconds to the