Python Virtual Environment . . . . . . . . . . . . . . . . . . . 24 1.3.2.2 O2: How to add Python Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 1.3.3 JDK issues . . . . . . . . . separate environment for each project. It is a directory tree which contains its own Python executable files and the installed Python packages. It is useful for local development to create a standalone Python 18 20:54 flink-dianfu-python-B-7174MD6R-1908. ˓→local.log Besides, you could also check if the files of the PyFlink package are consistent. It may happen that you have installed an old version of PyFlink

Python Virtual Environment . . . . . . . . . . . . . . . . . . . 24 1.3.2.2 O2: How to add Python Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 1.3.3 JDK issues . . . . . . . . . separate environment for each project. It is a directory tree which contains its own Python executable files and the installed Python packages. It is useful for local development to create a standalone Python 18 20:54 flink-dianfu-python-B-7174MD6R-1908. ˓→local.log Besides, you could also check if the files of the PyFlink package are consistent. It may happen that you have installed an old version of PyFlink

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TCP socket connection. ssc.socketTextStream("localhost", 9999) ▶ File stream • Reads data from files. streamingContext.fileStream[KeyClass, ValueClass, InputFormatClass](dataDirectory) streamingContext TCP socket connection. ssc.socketTextStream("localhost", 9999) ▶ File stream • Reads data from files. streamingContext.fileStream[KeyClass, ValueClass, InputFormatClass](dataDirectory) streamingContext

Kalavri
 vkalavri@bu.edu Spring 2020 1/28: Stream ingestion and pub/sub systems Streaming sources Files, e.g. transaction logs Sockets IoT devices and sensors Databases and KV stores Message queues

in fully dynamic streams with fixed memory size. TKDD 2017. https://www.kdd.org/ kdd2016/papers/files/rfp0465-de-stefaniA.pdf Further reading

ETL process complex fast and light-weight ETL: Extract-Transform-Load
 e.g. unzipping compressed files, data cleaning and standardization 6 Vasiliki Kalavri | Boston University 2020 1. Process events

can be configured7. • Mapped memory is usually close to zero as Flink does not use memory-mapped files. In a containerized environment you should additionally monitor the overall memory consumption of