### 2.3 for循环中list禁用remove/add> 不要在 foreach 循环里进行元素的 remove / add 操作。remove 元素请使用 iterator 方式, 如果并发操作,需要对 iterator 对象加锁。```//正例: List list = new ArrayL... aiter(Node.EXCLUSIVE), arg)){ selfInterrupt(); } }```### 2.5 异常处理> catch 时请分清稳定代码和非稳定代码,稳定代码指的是无论如何不会出错的代码。对于非稳定 代码的 catch 尽可能进行区分...
```type具体类别如下:``` feat:新功能(feature) fix:修补bug docs:文档(documentation) style: 格式(不影响代码运行的变动)refactor:重构(即不是新增功... commitsRange 方法是形成可读流的关键方法,方法通过 git log,根据你设置的模板生成对应的信息;其中args为数组。* args[0]: "log"* args[1]: "--format=%B%n-hash-%n%H%n-gitTags-%n%d%n-committerDate-%n%ci%n-...
foreach类别集合Collection,查询目前所以的类别下的feed数据流集合并存储到Map中,其中key是类别,value是类别对应的数组集合(key:category,value:colletion)- foreach上述获取的Map并发起goruntine查询每一条... type PoolBuilder struct { workerNum int // Worker 线程数量 DelJobChan *chan string // 缓冲队列}// 创建一个协程池func (pool *PoolBuilder) listenAdd(num int) { for i := ...
实现exactly-once的语义。开发者首先需要创建`Sink`类,实现`Sink`接口,主要负责数据写入组件的生命周期管理,构架作业。通过`configure`方法定义`writerConfiguration`的配置,通过`createTypeInfoConverter`方法来... snapshotState(long checkpointId) throws IOException { return Collections.emptyList(); } /*** Closing writer when operator is closed.** @throws IOException Exception encountered when cl...
Q:向量数据库修改或者删除记录,索引多久会更新?A:Collection 数据写入、修改/删除后,索引Index 数据更新时间最长滞后 20s。 Q:向量数据库的计费项是综合计费吗?A:向量数据库计费方式是按量付费,后付费方式,以小时为... A:小数点前面的有效数字基本一致的,后面的不一致是符合预期的,模型推理会损失精度,不影响检索效果。 Q:知识库下单后无法使用,报错“User id not authorized to perform”A:大概率是主账号没有给子账号配置策略,配置...
实现exactly-once的语义。开发者首先需要创建`Sink`类,实现`Sink`接口,主要负责数据写入组件的生命周期管理,构架作业。通过`configure`方法定义`writerConfiguration`的配置,通过`createTypeInfoConverter`方法来... snapshotState(long checkpointId) throws IOException { return Collections.emptyList(); } /*** Closing writer when operator is closed.** @throws IOException Exception encountered when cl...
Type: FixedString(32) Example sql SELECT base64Encode(toString(SHA256('SAH256 test')))Result: plain%20text ┌─base64Encode(toString(SHA256('SAH256 test')))─┐│ I+OvFrLmD2Ofq1xBuFmKYCuB6iSg5/OrhcIbI5Qezs8= │└───────────────────────────────────────────────┘URLHashA fast, decent-quality non-cryptographic hash function for a string obtained from...
## 一、Spark 架构原理![在这里插入图片描述](https://img-blog.csdnimg.cn/20200103141246751.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JlaW... ala集合创建。```cppscala> val array = Array(1,2,3,4,5)array: Array[Int] = Array(1, 2, 3, 4, 5)scala> val rdd = sc.parallelize(array)rdd: org.apache.spark.rdd.RDD[Int] = ParallelCollectionRDD[...
# 前言首先介绍一下 **Live reloading** 和 **Hot reloading** 的区别:- **Live reloading**: 修改文件之后,Webpack 重新编译,并强制刷新浏览器,属于全局(整个应用)刷新,相当于 `window.location.reload()`;... const update: RefreshUpdate = { updatedFamilies, // Families that will re-render preserving state staleFamilies, // Families that will be remounted }; helpersByRendererID.forEach(help...
column_defination: column_name column_type [ COMMENT comment ]bucket_spec: CLUSTERED BY ( ) [ SORTED BY ( ) ] INTO num_buckets BUCKETS skew_spec: SKEWED BY ( column_name_1, c... ROW FORMAT DELIMITED [ FIELDS TERMINATED BY fields_termiated_char [ ESCAPED BY escaped_char ] ] [ COLLECTION ITEMS TERMINATED BY collection_items_termiated_char ] [ MAP KEYS TERMINAT...
Metadata是Terraform中的内置元参数,可以在Provider、Resource、Data Sources块中使用。本文为您介绍Resource块支持的元参数及其作用: depends_on:指定资源的依赖项。 count:创建多个相同配置的资源。 for_each:根... { count = 3 volume_name = "terraform-test" zone_id = "cn-beijing-a" volume_type = "PTSSD" kind = "data" size = 40}如果您对资源的某些参数有唯一性要求,可以使用count.index属性区分,标识从0开始计数...
HAVING , and ORDER BY clauses be calculated from keys or from aggregate functions. In other words, each column selected from the table must be used either in keys or inside aggregate functions. To get behavior like in MySQL, you can put the other columns in the any aggregate function. Syntax sql any(column)Arguments column – The column name. Returned value first value encontered. Type is same ...
> topicFutures = new HashMap<>(newTopics.size()); final CreatableTopicCollection topics = new CreatableTopicCollection(); for (NewTopic newTopic : newTopics) { if (topicNameIsUnrepresentable... (createTopicsRequest.data.topics.size) // 如果当前 Broker 不是属于 Controller 的话,则抛出异常。 if (!controller.isActive) { createTopicsRequest.data.topics.forEach { topic => results.a...