ALIBABA · objective · 12% of the exam
Data Collections
Exam objectives are the official skill domains Data Engineer (Associate) tests. Below are the official ALIBABA docs our questions on this objective cite — review them, then practise.
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Official references for this objective
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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
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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.
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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.
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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.