Kudu Hive事务 HBase 流式处理 Apache Hudi填补了在DFS上处理数据的巨大空白，并可以和这些技术很好地共存。然而， 通过将Hudi与一些相关系统进行对比，来了解Hudi如何适应当前的大数据生态系统，并知晓这些系统在设计中做的不同权衡仍将非常有用。 Kudu Apache Kudu 是一个与Hudi具有相似目标的存储系统...

GRANT Statement (Impala 2.0 or higher only) GRANT Statement (Impala 2.0 or higher only) The GRANT statement grants a privilege on a specified object to a role or grants a role...

后台维护任务 Apache Kudu 后台维护任务 Maintenance manager ( 维护管理 ) Flushing data to disk ( 将数据刷新到磁盘 ) Compacting on-disk data ( 压缩磁盘数据 ) Write-ahead log GC ( 预写日志 GC ) Tablet history GC a...

MAX_NUM_RUNTIME_FILTERS Query Option (Impala 2.5 or higher only) MAX_NUM_RUNTIME_FILTERS Query Option (Impala 2.5 or higher only) The MAX_NUM_RUNTIME_FILTERS query option sets...

MAX_NUM_RUNTIME_FILTERS Query Option (Impala 2.5 or higher only) MAX_NUM_RUNTIME_FILTERS Query Option (Impala 2.5 or higher only) The MAX_NUM_RUNTIME_FILTERS query option sets...

REFRESH Statement REFRESH Statement To accurately respond to queries, the Impala node that acts as the coordinator (the node to which you are connected through impala-shell, JD...

RUNTIME_BLOOM_FILTER_SIZE Query Option (Impala 2.5 or higher only) RUNTIME_BLOOM_FILTER_SIZE Query Option (Impala 2.5 or higher only) Size (in bytes) of Bloom filter data struc...

DISABLE_ROW_RUNTIME_FILTERING Query Option (Impala 2.5 or higher only) DISABLE_ROW_RUNTIME_FILTERING Query Option (Impala 2.5 or higher only) The DISABLE_ROW_RUNTIME_FILTERING ...

RUNTIME_BLOOM_FILTER_SIZE Query Option (Impala 2.5 or higher only) RUNTIME_BLOOM_FILTER_SIZE Query Option (Impala 2.5 or higher only) Size (in bytes) of Bloom filter data struc...

UPSERT Statement (Impala 2.8 or higher only) UPSERT Statement (Impala 2.8 or higher only) Acts as a combination of the INSERT and UPDATE statements. For each row processed by...