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内存要求
Ambari 主机应至少具有 1 GB RAM，以及 500 MB 可用空间。 要检查任何主机上的可用内存，请运行： free - m 如果您计划将 Ambari Metrics Service (AMS) 安装到集群中，则应查看在 Hortonworks Data Platform Apache Ambari Operations 中使用 A... -
Queries
Spark Queries To use Iceberg in Spark, first configure Spark catalogs . Iceberg uses Apache Spark’s DataSourceV2 API for data source and catalog implementations. Querying with S... -
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' , $$ ... -
Gobblin Metrics Performance
Generalities How to interpret these numbers What if I need larger QPS? Update Metrics Performance Multiple metric updates per iteration Multi-threading Running Performance Tes... -
Transactions
Transactions management RMap , RMapCache , RLocalCachedMap , RSet , RSetCache and RBucket Redisson objects may participant in Transaction with ACID properties. It uses locks for... -
Numeric Functions
rand abs ceil floor round sign rand rand() returns a random floating point number in the range from 0 (inclusive) to 1 (exclusive); i.e.[0,1). The numbers returned follow ... -
Google BigQuery
Querying from Google BigQuery Iceberg tables To read an Apache XTable™ (Incubating) synced Iceberg table from BigQuery , you have two options: Using Iceberg JSON metadata file ... -
DingTalk
Description Key features Options url [string] secret [string] common options Example Changelog 2.2.0-beta 2022-09-26 DinkTalk sink connector Description A sink plugi... -
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DataHub
Description Key features Options endpoint [string] accessId [string] accessKey[string] project [string] topic [string] timeout [int] retryTimes [int] common options Exam...
