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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... -
WITH
Introduction Filter on aggregate function results Sort results before using collect on them Limit branching of a path search Introduction Using WITH , you can manipulate the ... -
Graphs
Create a Graph create_graph() Delete a Graph drop_graph() How Graphs Are Stored In Postgres A graph consists of a set of vertices and edges, where each individual node and ed... -
Writes
Spark Writes To use Iceberg in Spark, first configure Spark catalogs . Some plans are only available when using Iceberg SQL extensions in Spark 3. Iceberg uses Apache Spark’s D... -
Scalar Functions
id start_id end_id type properties head last length size startNode endNode timestamp toBoolean toFloat toInteger coalesce id id() returns the id of a vertex or e... -
Introduction
Documentation Apache Iceberg is an open table format for huge analytic datasets. Iceberg adds tables to compute engines including Spark, Trino, PrestoDB, Flink, Hive and Impala u... -
Building Gobblin
Overview Information Recorded Job Execution Information Task Execution Information Default Implementation Rest Query API Example Queries Job Execution History Server Over... -
Job Execution History Store
Overview Information Recorded Job Execution Information Task Execution Information Default Implementation Rest Query API Example Queries Job Execution History Server Over... -
Using Cypher in a CTE Expression
There are no restrictions to using Cypher with CTEs (Common Table Expressions ). Query: WITH graph_query as ( SELECT * FROM cypher ( 'graph_name' , $$ ... -
SQL In Cypher
Create Function Query AGE does not support SQL being directly written in Cypher. However with user defined functions you can write SQL queries and call them in a cypher command...
