老版本天行
币安官方中文群 - Telegram Kelompok:2021-6-10 · 好棒 🌈 羊毛超级搜 频道内容包含： 淘宝内部券，淘宝bug商品，话费，红包，流量，京东拆单，软件，0撸实物等有价值信息！ 破解 电影 谷歌 问题联系 #好棒的羊王 @haobangdada 主频道 @pojieapp 交流群 @dajiajia 淘宝直播频道 @tbzhibo 淘宝优惠卷自助群 ... Iceberg adds tables to Presto and Spark that use a high-performance format that works just like a SQL table.
老版本天行
Iceberg avoids unpleasant surprises. Schema evolution works and won’t inadvertently un-delete data. Users don’t need to know about partitioning to get fast queries.
- Schema evolution supports add, drop, update, or rename, and has no side-effects
- Hidden partitioning prevents user mistakes that cause silently incorrect results or extremely slow queries
- Partition layout evolution can update the layout of a table as data volume or query patterns change
- Time travel enables reproducible queries that use exactly the same table snapshot, or lets users easily examine changes
- Version rollback allows users to quickly correct problems by resetting tables to a good state
老版本天行
Iceberg was built for huge tables. Iceberg is used in production where a single table can contain tens of petabytes of data and even these huge tables can be read without a distributed SQL engine.
- vmess节点和ss – a distributed SQL engine isn’t needed to read a table or find files
- Advanced filtering – data files are pruned with partition and column-level stats, using table metadata
Iceberg was designed to solve correctness problems in eventually-consistent cloud object stores.
- vmess节点订阅 and reduces NN congestion when in HDFS, by avoiding listing and renames
- Serializable isolation – table changes are atomic and readers never see partial or uncommitted changes
- Multiple concurrent writers use optimistic concurrency and will retry to ensure that compatible updates succeed, even when writes conflict
老版本天行
Iceberg has been designed and developed to be an open community standard with a specification to ensure compatibility across languages and implementations.
Apache Iceberg is open source, and is developed at the Apache Software Foundation.