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第四章：线程安全问题
学习目标 1. 什么是线程安全 1.1 线程安全的定义 1.2 线程安全的重要性 2. 共享资源访问的竞态条件 2.1 什么是竞态条件 2.2 竞态条件示例 2.3 竞态条件的类型 读-改-写竞态条件 检查再执行竞态条件 3. 线程安全问题的表现形式 3.1 原子性问题 3.2 可见性问题 3.3 有序性问题 4. 实战案例：商品... -
SET
Terminal SET clauses Set a property Return created vertex Remove a property Set multiple properties using one SET clause The SET clause is used to update labels and properti... -
String
match split trim replace toLower toUpper test toString match RegExp → String → [String | Undefined] Parameters rxA regular expression. strThe string to match against... -
JsonPath
Description Options common options [string] fields[array] option src_field dest_field dest_type path Read Json Example Read SeatunnelRow Example Changelog JsonPath tr... -
Sink Common Options
source_table_name [string] parallelism [int] Examples Common parameters of sink connectors name type required default value source_table_name string no - p... -
Greenplum
Description Key Features Options driver [string] url [string] common options Changelog 2.2.0-beta 2022-09-26 Greenplum sink connector Description Write data to Greenp... -
Flink Queries
Flink Queries Iceberg support streaming and batch read With Apache Flink ‘s DataStream API and Table API. Reading with SQL Iceberg support both streaming and batch read in Flink... -
Structured Streaming
Spark Structured Streaming Iceberg uses Apache Spark’s DataSourceV2 API for data source and catalog implementations. Spark DSv2 is an evolving API with different levels of support... -
DELETE
Terminal DELETE clauses Introduction Delete isolated vertices Delete all vertices and edges associated with them Delete edges only Return a deleted vertex The DELETE clause... -
Object
clone values eqProps keys omit pick pickAll project prop props keysIn path valuesIn toPairs toPairsIn clone {*} → {*} Parameters valueThe object or array to c...
