npe 400

Org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.rmappattemptimpl:appattempt_1466451117456_ 12139_000002statechangefromfinal_savingtofailed2016-06-26 12:35:41,504nBsp;infoorg.apache.hadoop.yarn.server.resourcemanager.rmapp.rmappimpl:thenumberof failedattemptsis0.Themaxattemptsis22016-06-26 12:35:41,505infoorg.apache.hadoop.yarn.server.resourcemanager.applicationmasterservice: registeringappattempt:appattempt_1466451117456_12139_0000032016-06-26 12:35:41,505infoorg.apache.hadoop.yarn.

The first thing to note is that although both @Resource and @autowire are used for dependency injection annotation, there are differences.1 resource does not depend on spring, the latter is the opposite, so as far as possible to reduce, use resource;2 Resource is preferred to match by variable name, and @resource (name= "") can also be used to specify the variable name to inject. Autowire is preferred by type, with @qualifier can also specify variable name.3 There is no supernatural event! There

:31)At Com.esotericsoftware.kryo.Kryo.readObject (kryo.java:711)At Com.esotericsoftware.kryo.serializers.ObjectField.read (objectfield.java:125)... More16/05/24 09:42:53 ERROR sparksqldriver:failed in [selectDt.d_year, item.i_brand_id brand_id, Item.i_brand Brand, SUM (ss_ext_sales_price) Sum_aggFrom Date_dim DT, Store_sales, itemwhere Dt.d_date_sk = Store_sales.ss_sold_date_skand Store_sales.ss_item_sk = Item.i_item_skand item.i_manufact_id = 436and dt.d_moy=12GROUP BY Dt.d_year, Item.i_brand,

line, we create an instance of the integer type and assign it to num, so now that NUM can finally point it out. You can then use this pointer to manipulate the object (. operation). However, if we declare a variable (a reference type) without an assignment statement, we use the variable directly, as follows: Object obj = null; System.out.println (Obj.tostring ()); That's the problem, so the obj variable is like a headless fly and doesn't know where to point. And you call Obj.tostring () is act

Post form 400 error:Correct practice:Add this on the head section of your layout:---------------------------------不推荐的做法，以下做法是取消CSRF令牌验证：Add this in your controller:public $enableCsrfValidation = false;Other methods:It turned out to be a CSRF validation issue, because the form was written by itself, and in the Yii framework, in order to prevent CSRF attacks, the Post's form data was encapsulated with CSRF token validation.Workaround Close CSRF Validat

include special characters such as%, , +, =, and so on in the URL when you need it? The answer is to use the corresponding encoding instead of the special character itself to construct the URL. For example, in the example above, you can replace the IP value with "172.142.%25" and replace the value of addr with "China%26america" so that the URLs are constructed with "href=?ip=172.142.%25q=mysql" and "href" respectively. = addr=china%26americaq= ' MySQL ', which ultimately resolves the value of t

Resolve Nginx Forwarding websocket 400 error descriptionBecause the personal server has more than one project, configured with a level two domain name, need to two level domain name forwarding, in the forwarding work this quickly took the famous nginx . Before that all the project run forward is no problem, but today in the deployment of a websocket project with communication, but the unexpected error message, as follows:1failed: Error during WebSocke

When using SPRINGMVC development, if the page has date format data, background accept is also java.util.Date, then report 400 error. The following is a demonstration example of the solution:This is the entity class, Inside CreateDate is java.util.Date type 1 Import java.util.Date; 2 3 public class User {4 5 private int userId; 6 private String userName; 7 private Date createdate; 8 9 Public User () {}10 one public user (int userId, String

400 Request Error: The server was unable to understand the request due to a malformed syntaxGeneral: This error should have many reasons, it is pointed out that because of the character set encoding cause 400, the main code: send the request to the server JSON parameter is Out.write (Json.getbytes ()) (read the operating system's character set, If the operating system differs from the server where the proje

System: WIN8.1Database: Oracle 11GR2Development tools: MyEclipse 8.6Frames: Spring3.2.9, SpringMVC3.2.9, MyBatis3.2.8 When using SPRINGMVC development, if the page has date format data, background accept is also java.util.Date, then report 400 error. The following is a demonstration example of the solution:This is the entity class, Inside CreateDate is java.util.Date type1 Importjava.util.Date;2 3 Public classUser {4 5 Private intuserId;6

In recent days, when the interface was developed, Tomcat reported 400 errors and looked for the following reasons.Error cause : The parameters section of the URL contains/, the default tomcat is not supported URL parameters include:/(%2F), \ (%5c).parsing method : can be configured by adding dorg.apache.tomcat.util.buf.udecoder.allow_encoded_slash=trueMethod 1: Modify the configuration file, tomcat6/conf/ catalina.properties file Add a line dorg.apac

', ' C ']}, {arrayformat: ' brackets '})' A[]=ba[]=c 'Qs.stringify ({a: [' B ', ' C ']}, {arrayformat: ' repeat '})' A=ba=c 'Serialization of 2.get parametershttps://www.kancloud.cn/yunye/axios/234845Cases:' Params ' is the URL parameter that will be sent with the requestMust be an unformatted object (plain objects) or Urlsearchparams objectParams: {id:12345},' Paramsserializer ' is a function that is responsible for the ' params ' serialization(e.g. Https://www.npmjs.com/package/qs, http://api

search engines continue to crawl and index existing locations, you should not use this code to tell a search engine that a page or site has been moved. A 4XXHTTP status code indicates a possible error in the request and can impede server processing. 400 (Error request) The server does not understand the syntax of the request. 401 (authentication error) this page requires authorization. You may not want to include this page in the index. 403 (Prohibit

to stand in the user's perspective to think of customers. To do all the things that compound customer needs. Website promotion can not be separated from the site optimization, the so-called "outward must be in first." Only solve the "internal" problem, your promotion can be more effective. Let us first say how to "Ann", then go to high talk about the broad "outward". E-commerce website optimization I will divide it into two chunks, front-end optimization and website overall information archi

Starting today, I am crazy about farming questions !!! Brush the question volume to 400 ~~~~~~~ Starting today, I am crazy about farming questions !!! Brush the question volume to 400 ~~~~~~~ Starting today, I am crazy about farming questions !!! Brush the question volume to 400 ~~~~~~~ Starting today, I am crazy about farming questions !!! Brush the question vol

When you use the command wrkactjob to check the running status of a job, you will often find some system jobs, but it is unclear what these system jobs are used, this article will introduce the usage of some major system jobs. A text system job is created and controlled by OS/400. It is used to control system resources and process system-level requests. In the command In the jobs displayed in wrkactjob, system jobs are sorted alphabetically after all

Error logging in the server is similar to this: 124.65.133.242––[27/oct/2014:14:30:51 +0800] "-" 400 0 "-" "-"124.65.133.242––[27/oct/2014:14:31:45 +0800] "-" 400 0 "-" "-"124.65.133.242––[27/oct/2014:14:31:45 +0800] "-" 400 0 "-" "-"124.65.133.242––[27/oct/2014:14:31:45 +0800] "-" 400 0 "-" "-" Casing After analyzi

Nationwide unique number, with call center platform functions and services, than 800 of the cost reduction of half, mobile phones, fixed, network can be dialed, so the artifact, you guessed right. Yes, TA is smart 400 phone. To be more specific, it is a unique number for the customer to be called a nationwide and the call to the number to be called the customer's prior telephone number or call center of the National Intelligent Network business, due t

The number of requests with a response code of 400 on an application increases by 1‰. The reason for the application's request is analyzed.First, check the log to check whether other requests of the ip address of the 400 request are normal, and eliminate the attack of forged requests. The User-Agent distribution is normal and the ip address distribution is normal. Responses to all

GPS navigation Entry Manual (400 yuan to achieve mobile GPS navigation, vehicle GPS navigation, PDA navigation/monkey brother 100GPS entry 2.0) Chapter 1 what isChapter II Functions of GPSChapter 3 Implementation of GPS (mobile phone/PDA/notebook)Chapter 4 how to implement Mobile Phone/PDA/notebook navigation with 400 RMBChapter 5 How to Select GPSChapter 6 GPS software MapChapter 7 How to purchase GPSCh