offset

Kafka之Consumer Rebalance

由 一世执手 提交于 2019-12-19 13:13:11
文章目录 Kafka版本 rebalance rebalance策略 rebalance generation rebalance协议 rebalance流程 rebalance监听器 Kafka版本 kafka版本1.1.1，可能绝大部分也适用于kafka 0.10.x及以上版本。 rebalance ConsumerGroup(消费组) 里的 Consumer(消费者) 共同读取 topic(主题) 的 partition(分区) ，一个新的 Consumer(消费者) 加入 ConsumerGroup(消费组) 时，读取的是原本由其他 Consumer(消费者) 读取的消息。当一个 Consumer(消费者) 被关闭或发生奔溃时，它就离开 ConsumerGroup(消费组) ，原本由它读取的分区将有 ConsumerGroup(消费组) 的其他 Consumer(消费者) 来读取。在 topic 发生变化时(比如添加了新的分区)，会发生 Partition 重分配, Partition 的所有权从一个 Consumer(消费者) 转移到另一个 Consumer(消费者) 的行为被称为 rebalance(再均衡) 。 rebalance(再均衡) 本质上是一种协议，规定了 ConsumerGroup(消费组) 中所有 Consumer(消费者) 如何达成一致来消费

Excel chart dynamic range-selection

由 ╄→尐↘猪︶ㄣ 提交于 2019-12-19 10:14:25
问题 I have a client that has a simple yet complicated request for an excel sheet setup, and I can't for the world thing of where to start. I'm drawing a blank. We have a data range. Example: Quarter Data 2010Q1 1 2010Q2 3 2010Q3 4 2010Q4 1 I have a chart built on top of that. Change data, chart changes, protect worksheet to keep other idi... er... users from changing old data. Simple. What I want to have happen: When I add the next Q1 below Q4, the chart "automagically" selects the most recent 4Q

Flink - FlinkKafkaConsumer08

由 空扰寡人 提交于 2019-12-19 02:15:28
先看 AbstractFetcher 这个可以理解就是，consumer中具体去kafka读数据的线程，一个fetcher可以同时读多个partitions的数据来看看 /** * Base class for all fetchers, which implement the connections to Kafka brokers and * pull records from Kafka partitions. * * <p>This fetcher base class implements the logic around emitting records and tracking offsets, * as well as around the optional timestamp assignment and watermark generation. * * @param <T> The type of elements deserialized from Kafka's byte records, and emitted into * the Flink data streams. * @param <KPH> The type of topic/partition identifier used by Kafka in the specific version.

XGBoost - Poisson distribution with varying exposure / offset

由 我们两清 提交于 2019-12-18 16:45:31
问题 I am trying to use XGBoost to model claims frequency of data generated from unequal length exposure periods, but have been unable to get the model to treat the exposure correctly. I would normally do this by setting log(exposure) as an offset - are you able to do this in XGBoost? (A similar question was posted here: xgboost, offset exposure?) To illustrate the issue, the R code below generates some data with the fields: x1, x2 - factors (either 0 or 1) exposure - length of policy period on

WEB甘特图（机器运行状态图）

由 六月ゝ 毕业季﹏ 提交于 2019-12-18 15:49:55
1 <div id="container" 2 style="width: 1608px; height: 901px; border: 1px dashed #A4A4A4; margin-top: 9px;"> 3 <div class="carNum"> 4 <div 5 style="background: #D3DFED; height: 40px; text-align: center;"> 6 <font size="4" color="#5D7CB2"><label 7 style="position: relative; top: 5px;">机器型号</label></font> 8 </div> 9 <hr 10 style="width: 1605px; border-top: 1px; border: 1px dashed #A4A4A4; margin-top: -1px;" /> 11 <div style="height: 9px;">B3-1</div> 12 <div id="B3-1" 13 style="position: absolute; margin-left: 1540px; margin-top: -10px;"> </div> 14 <hr 15 style="width: 1605px; border-top: 1px;

Laravel Eloquent limit and offset

由 时光总嘲笑我的痴心妄想 提交于 2019-12-18 12:04:55
问题 This is mine $art = Article::where('id',$article)->firstOrFail(); $products = $art->products; I just wanna take a limit 'product' This is wrong way $products = $art->products->offset($offset*$limit)->take($limit)->get(); Please give me a hand! Thanks! 回答1: skip = OFFSET $products = $art->products->skip(0)->take(10)->get(); //get first 10 rows $products = $art->products->skip(10)->take(10)->get(); //get next 10 rows From laravel doc 5.2 https://laravel.com/docs/5.2/queries#ordering-grouping

Laravel Eloquent limit and offset

由 懵懂的女人 提交于 2019-12-18 12:04:14
问题 This is mine $art = Article::where('id',$article)->firstOrFail(); $products = $art->products; I just wanna take a limit 'product' This is wrong way $products = $art->products->offset($offset*$limit)->take($limit)->get(); Please give me a hand! Thanks! 回答1: skip = OFFSET $products = $art->products->skip(0)->take(10)->get(); //get first 10 rows $products = $art->products->skip(10)->take(10)->get(); //get next 10 rows From laravel doc 5.2 https://laravel.com/docs/5.2/queries#ordering-grouping

How to find the element's x center coordinates and related window offset

由 十年热恋 提交于 2019-12-18 10:34:15
问题 i would like to retrieve the element offset starting from his own x center coordinates. how can i do it? Actually i can find the window offset of an element but it retrieves the coordinates from the border of the element like this: var _position = $(this).offset(); 回答1: You have to use offset() to get the top and left position, then add half of the height() and width() values to them. That gives the center coordinates. var $this = $(this); var offset = $this.offset(); var width = $this.width(

Python: strftime() UTC Offset Not working as Expected in Windows

由 泄露秘密 提交于 2019-12-18 07:32:54
问题 Every time I use: time.strftime("%z") I get: Eastern Daylight Time However, I would like the UTC offset in the form +HHMM or -HHMM. I have even tried: time.strftime("%Z") Which still yields: Eastern Daylight Time I have read several other posts related to strftime() and %z always seems to return the UTC offset in the proper +HHMM or -HHMM format. How do I get strftime() to output in the +HHMM or -HHMM format for python 3.3? Edit: I'm running Windows 7 回答1: For a proper solution, see abarnert

C code to get local time offset in minutes relative to UTC?

由 六月ゝ 毕业季﹏ 提交于 2019-12-18 05:49:27
问题 I didn't find a trivial way to get the time offset in minutes between the local time and the UTC time. At first I intended to use tzset() but it doesn't provide the daylight saving time. According to the man page, it is simply an integer different of zero if day light saving is in effect. While it is usually an hour, it may be half an hour in some country. I would prefer avoiding to compute the time difference between current UTC returned by gmtime() and localtime() . A more general solution
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