Data Collections — Data Engineer (Associate)

The official ALIBABA documentation our Data Collections practice questions are cited to. Review the primary sources, then practise.

Official references for this objective

Alibabacloud — How to create a collector to gather metadata from various data sources into DataWorks - DataWorks - Alibaba Cloud Documentation Center

If the connectivity test returns the error Backend service call failed: test connectivity failed.not support data type , contact technical support to upgrade the resource
Alibabacloud — Collect text logs from hosts | LoongCollector Logtail - Simple Log Service - Alibaba Cloud Documentation Center

Otherwise, the same file may match multiple Logtail collection configurations, which results in duplicate collection.
Alibabacloud — Configure Logtail to collect logs with nanosecond timestamps - Simple Log Service - Alibaba Cloud

__time__ : A standard Unix timestamp (long integer) in seconds. __time_ns_part__ : The nanosecond part (long integer), with a value range of 0 to 999,999,999.
Alibabacloud — Logtail legacy log collection agent - Simple Log Service - Simple Log Service - Alibaba Cloud Documentation Center

Logtail resumes from the last checkpoint. Logtail reads up to 512 KB per read. Each log entry must not exceed 512 KB.