2025年12月28日

Hadoop - Difference between 'hadoop fs' and 'hdfs dfs'

摘要： In modern Hadoop environments like your 3.4.2 setup, there is functionally no difference between the two commands when interacting with HDFS. However, 阅读全文

posted @ 2025-12-28 21:37 ZhangZhihuiAAA 阅读(4) 评论(0) 推荐(0)

Hive - Setup standalone metastore using Postgres, install Tez and configure HiveServer2

摘要： https://hive.apache.org/docs/latest/admin/adminmanual-metastore-3-0-administration/ You can find an E/R diagram for the metastore here. Download Stand 阅读全文

posted @ 2025-12-28 21:26 ZhangZhihuiAAA 阅读(7) 评论(0) 推荐(0)

Hive - Install Hive-4.2.0

摘要： https://hive.apache.org/docs/latest/admin/adminmanual-installation/ frank@ZZHPC:~/download$ wget https://dlcdn.apache.org/hive/hive-4.2.0/apache-hive- 阅读全文

posted @ 2025-12-28 18:31 ZhangZhihuiAAA 阅读(5) 评论(0) 推荐(0)

AI Data Pipelines

摘要： In AI development, a data pipeline is the "nervous system" of the application. While a traditional data pipeline (ETL) is often a linear path ending i 阅读全文

posted @ 2025-12-28 16:06 ZhangZhihuiAAA 阅读(5) 评论(0) 推荐(0)

Hadoop - Setting up a Single Node Cluster with Hadoop-3.4.2

摘要： https://hadoop.apache.org/docs/stable/hadoop-project-dist/hadoop-common/SingleCluster.html Prerequisites frank@ZZHPC:~$ sudo apt install ssh frank@ZZH 阅读全文

posted @ 2025-12-28 10:26 ZhangZhihuiAAA 阅读(7) 评论(0) 推荐(0)

Flink - Catalog

摘要： Why did the Flink tables I created disappear after restarting the Flink cluster? Flink SQL> SHOW TABLES; Empty set The reason your Flink tables disapp 阅读全文

posted @ 2025-12-28 09:46 ZhangZhihuiAAA 阅读(4) 评论(0) 推荐(0)


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2025年12月28日