I just encountered such a problem in learning Hadoop get started -sharp bin hdfs dfs -ls drwxr-xr-x - zhugw supergroup 0 2018-11-17 17:11 output drwxr-xr-x - zhugw supergroup 0 2018-11-17 18:02 pv_users_count -sharp bin hdfs df...
when running hadoop streaming, an error is reported. The exception content is as follows: Error: java.lang.RuntimeException: PipeMapRed.waitOutputThreads(): subprocess failed with code 126 at org.apache.hadoop.streaming.PipeMapRed.waitOutputThreads...
Today, I encountered a cross-domain problem. I would like to ask that the server side is not allowed to cross-domain. The client cannot request data anyway, so it can be bypassed? ...
before I destroy the instance in demo, the instance is reinitialized, which is ok: var handler = function () { alert(12111); } var handler1 = function () { alert(22222); } var player; play(handler); function play(handler) { videojs("ex...
chrome browser, after sending the request, you cannot see the cookie value of header in the request (https). Firefox can see. Test link https: pages.c-ctrip.com ttd overseattd 201806 hotel-ticket index.html?disable_webview_cache_key=1&recomid=eQDgK...
in vue, I use vee-validate to validate the duplicate password of the form, using the verification rules of the official website, as follows: enter the password: < input VMI model = "password " type= "text " name= "password_confirmation " > en...
as the title the real scene is that the chain store data of any depth and level given by the backend needs to be displayed on the page in the structure of a tree related codes let obj = { rst: 1 , branch: [ { rst: 2-1 , br...