Linux under gzip compression the same content size is not the same reason

A data, two transmission ways to collect.

One data: Multiple data acquisition nodes or multiple sources

Two ways: one is to copy data from multiple collection nodes or multiple data sources, and merge into one file.

The other is that multiple acquisition nodes or data sources send data to the summary end at the same time, and finally merge into a file

The difference between the two methods: the aggregated data is the same, but the order will be different

Compress merged files using the gzip command .... The final display of compressed file size is not the same ....

This shows that the same data with the GZIP compression comparison size needs to ensure that the same order!! Compression algorithm results in different order compression result is different ...

This problem has been a long time to find, the main reason is the gzip compression algorithm does not understand.

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