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Neo4j - Cypher Manual Study Notes 8

摘要： COLLECT subqueries Introduced in 5.6 A COLLECT subquery expression can be used to create a list with the rows returned by a given subquery. COLLECT su 阅读全文

posted @ 2025-03-06 16:34 ZhangZhihuiAAA 阅读(11) 评论(0) 推荐(0)

Big Data Analytics with Apache Hadoop Study Notes 6

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posted @ 2025-03-05 10:17 ZhangZhihuiAAA 阅读(7) 评论(0) 推荐(0)

Big Data Analytics with Apache Hadoop Study Notes 5

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posted @ 2025-03-04 22:03 ZhangZhihuiAAA 阅读(6) 评论(0) 推荐(0)

Big Data Analytics with Apache Hadoop Study Notes 4

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posted @ 2025-03-04 19:46 ZhangZhihuiAAA 阅读(10) 评论(0) 推荐(0)

Hive - Install Apache Hive and Apache Tez

摘要： Download Hive 4.0.1 from https://dlcdn.apache.org/hive/hive-4.0.1/apache-hive-4.0.1-bin.tar.gz . .bashrc: export HIVE_HOME=$sfw/hive-4.0.1 export HIVE 阅读全文

posted @ 2025-02-25 20:24 ZhangZhihuiAAA 阅读(182) 评论(0) 推荐(0)

Big Data Analytics with Apache Hadoop Study Notes 3

摘要： LLAP -- 1.Creating a Table: CREATE TABLE employees (emp_id INT, emp_name STRING, emp_salary DOUBLE) STORED AS ORC TBLPROPERTIES ('transactional'='true 阅读全文

posted @ 2025-02-25 19:53 ZhangZhihuiAAA 阅读(10) 评论(0) 推荐(0)

Hadoop - Setting up a Single Node Cluster in Pseudo-Distributed Mode

摘要： References: https://hadoop.apache.org/docs/stable/hadoop-project-dist/hadoop-common/SingleCluster.html https://hadoop.apache.org/docs/r3.4.1/hadoop-pr 阅读全文

posted @ 2025-02-23 22:25 ZhangZhihuiAAA 阅读(87) 评论(0) 推荐(0)

Big Data Analytics with Apache Hadoop Study Notes 2

摘要： See https://www.cnblogs.com/zhangzhihui/p/18733011 . hdfs dfs -ls <path> : List files and directories in HDFS. zzh@ZZHPC:~$ hdfs dfs -ls / Found 2 ite 阅读全文

posted @ 2025-02-23 10:34 ZhangZhihuiAAA 阅读(22) 评论(0) 推荐(0)

Big Data Analytics with Apache Hadoop Study Notes 1

摘要： Hadoop is an open-source framework designed for distributed storage and processing of large datasets across clusters of computers. It provides a scala 阅读全文

posted @ 2025-02-22 21:46 ZhangZhihuiAAA 阅读(10) 评论(0) 推荐(0)

Neo4j - Cypher Manual Study Notes 7

摘要： Subqueries CALL subqueries The CALL clause can be used to invoke subqueries that execute operations within a defined scope, thereby optimizing data ha 阅读全文

posted @ 2025-02-20 18:29 ZhangZhihuiAAA 阅读(21) 评论(0) 推荐(0)

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