out_s3: Add parquet compression type

[cosmo0920]

With columnify command we're able to support parquet format on out_s3.

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Enter [N/A] in the box, if an item is not applicable to your change.

Testing
Before we can approve your change; please submit the following in a comment:

• Example configuration file for the change

[SERVICE]
    Flush        5
    Daemon       Off
    Log_Level    trace
    HTTP_Server  Off
    HTTP_Listen  0.0.0.0
    HTTP_Port    2020

[INPUT]
    Name dummy
    Tag  dummy.local
    dummy {"boolean": false, "int": 1, "long": 1, "float": 1.1, "double": 1.1, "bytes": "foo", "string": "foo"}

[OUTPUT]
    Name  s3
    Match dummy*
    Region us-east-2
    bucket fbit-parquet-s3
    Use_Put_object true
    compression parquet
    parquet.schema_file schema-dummy.avsc

schema-dummy.avsc

{
  "type": "record",
  "name": "DummyMessages",
  "fields" : [
    {"name": "boolean", "type": "boolean"},
    {"name": "int",     "type": "int"},
    {"name": "long",    "type": "long"},
    {"name": "float",   "type": "float"},
    {"name": "double",  "type": "double"},
    {"name": "bytes",   "type": "bytes"},
    {"name": "string",  "type": "string"}
  ]
}

• Debug log output from testing the change

Fluent Bit v4.1.0
* Copyright (C) 2015-2025 The Fluent Bit Authors
* Fluent Bit is a CNCF sub-project under the umbrella of Fluentd
* https://fluentbit.io

______ _                  _    ______ _ _             ___  _____ 
|  ___| |                | |   | ___ (_) |           /   ||  _  |
| |_  | |_   _  ___ _ __ | |_  | |_/ /_| |_  __   __/ /| || |/' |
|  _| | | | | |/ _ \ '_ \| __| | ___ \ | __| \ \ / / /_| ||  /| |
| |   | | |_| |  __/ | | | |_  | |_/ / | |_   \ V /\___  |\ |_/ /
\_|   |_|\__,_|\___|_| |_|\__| \____/|_|\__|   \_/     |_(_)___/ 


[2025/07/28 19:17:51] [ info] Configuration:
[2025/07/28 19:17:51] [ info]  flush time     | 5.000000 seconds
[2025/07/28 19:17:51] [ info]  grace          | 5 seconds
[2025/07/28 19:17:51] [ info]  daemon         | 0
[2025/07/28 19:17:51] [ info] ___________
[2025/07/28 19:17:51] [ info]  inputs:
[2025/07/28 19:17:51] [ info]      dummy
[2025/07/28 19:17:51] [ info] ___________
[2025/07/28 19:17:51] [ info]  filters:
[2025/07/28 19:17:51] [ info] ___________
[2025/07/28 19:17:51] [ info]  outputs:
[2025/07/28 19:17:51] [ info]      s3.0
[2025/07/28 19:17:51] [ info] ___________
[2025/07/28 19:17:51] [ info]  collectors:
[2025/07/28 19:17:51] [ info] [fluent bit] version=4.1.0, commit=c8e4dffcd9, pid=234222
[2025/07/28 19:17:51] [debug] [engine] coroutine stack size: 24576 bytes (24.0K)
[2025/07/28 19:17:51] [ info] [storage] ver=1.1.6, type=memory, sync=normal, checksum=off, max_chunks_up=128
[2025/07/28 19:17:51] [ info] [simd    ] disabled
[2025/07/28 19:17:51] [ info] [cmetrics] version=1.0.5
[2025/07/28 19:17:51] [ info] [ctraces ] version=0.6.6
[2025/07/28 19:17:51] [ info] [input:dummy:dummy.0] initializing
[2025/07/28 19:17:51] [ info] [input:dummy:dummy.0] storage_strategy='memory' (memory only)
[2025/07/28 19:17:51] [debug] [dummy:dummy.0] created event channels: read=25 write=26
[2025/07/28 19:17:51] [debug] [s3:s3.0] created event channels: read=27 write=28
[2025/07/28 19:17:51] [ info] [output:s3:s3.0] Using upload size 100000000 bytes
[2025/07/28 19:17:51] [debug] [aws_credentials] Initialized Env Provider in standard chain
[2025/07/28 19:17:51] [debug] [aws_credentials] creating profile (null) provider
[2025/07/28 19:17:51] [debug] [aws_credentials] Initialized AWS Profile Provider in standard chain
[2025/07/28 19:17:51] [debug] [aws_credentials] Not initializing EKS provider because AWS_ROLE_ARN was not set
[2025/07/28 19:17:51] [debug] [aws_credentials] Not initializing ECS/EKS HTTP Provider because AWS_CONTAINER_CREDENTIALS_RELATIVE_URI and AWS_CONTAINER_CREDENTIALS_FULL_URI is not set
[2025/07/28 19:17:51] [debug] [aws_credentials] Initialized EC2 Provider in standard chain
[2025/07/28 19:17:51] [debug] [aws_credentials] Sync called on the EC2 provider
[2025/07/28 19:17:51] [debug] [aws_credentials] Init called on the env provider
[2025/07/28 19:17:51] [ info] [output:s3:s3.0] Sending locally buffered data from previous executions to S3; buffer=/tmp/fluent-bit/s3/fbit-parquet-s3
[2025/07/28 19:17:51] [ info] [output:s3:s3.0] Pre-compression chunk size is 5922, After compression, chunk is 1070 bytes
[2025/07/28 19:17:52] [debug] [upstream] KA connection #32 to s3.us-east-2.amazonaws.com:443 is connected
[2025/07/28 19:17:52] [debug] [http_client] not using http_proxy for header
[2025/07/28 19:17:52] [debug] [aws_credentials] Requesting credentials from the env provider..
[2025/07/28 19:17:53] [debug] [upstream] KA connection #32 to s3.us-east-2.amazonaws.com:443 is now available
[2025/07/28 19:17:53] [debug] [output:s3:s3.0] PutObject http status=200
[2025/07/28 19:17:53] [ info] [output:s3:s3.0] Successfully uploaded object /fluent-bit-logs/dummy.local/2025/07/28/10/17/51-object7DWAHnqM
[2025/07/28 19:17:53] [debug] [aws_credentials] upstream_set called on the EC2 provider
[2025/07/28 19:17:53] [ info] [sp] stream processor started
[2025/07/28 19:17:53] [ info] [engine] Shutdown Grace Period=5, Shutdown Input Grace Period=2
[2025/07/28 19:17:53] [ info] [output:s3:s3.0] worker #0 started
[2025/07/28 19:17:57] [debug] [task] created task=0x8661470 id=0 OK
[2025/07/28 19:17:57] [debug] [output:s3:s3.0] task_id=0 assigned to thread #0
[2025/07/28 19:17:57] [debug] [output:s3:s3.0] Creating upload timer with frequency 60s
[2025/07/28 19:17:57] [debug] [out flush] cb_destroy coro_id=0
[2025/07/28 19:17:57] [debug] [task] destroy task=0x8661470 (task_id=0)
[2025/07/28 19:18:02] [debug] [task] created task=0x86f0a30 id=0 OK
[2025/07/28 19:18:02] [debug] [output:s3:s3.0] task_id=0 assigned to thread #0
[2025/07/28 19:18:02] [debug] [out flush] cb_destroy coro_id=1
[2025/07/28 19:18:02] [debug] [task] destroy task=0x86f0a30 (task_id=0)
[2025/07/28 19:18:07] [debug] [task] created task=0x877db90 id=0 OK
[2025/07/28 19:18:07] [debug] [output:s3:s3.0] task_id=0 assigned to thread #0
[2025/07/28 19:18:07] [debug] [out flush] cb_destroy coro_id=2
[2025/07/28 19:18:07] [debug] [task] destroy task=0x877db90 (task_id=0)
^C[2025/07/28 19:18:08] [engine] caught signal (SIGINT)
[2025/07/28 19:18:08] [debug] [task] created task=0x87f0160 id=0 OK
[2025/07/28 19:18:08] [debug] [output:s3:s3.0] task_id=0 assigned to thread #0
[2025/07/28 19:18:08] [ warn] [engine] service will shutdown in max 5 seconds
[2025/07/28 19:18:08] [debug] [out flush] cb_destroy coro_id=3
[2025/07/28 19:18:08] [debug] [engine] retry=0x75f54b0 for task 0 already scheduled to run, not re-scheduling it.
[2025/07/28 19:18:08] [ info] [input] pausing dummy.0
[2025/07/28 19:18:08] [debug] [task] destroy task=0x87f0160 (task_id=0)
[2025/07/28 19:18:09] [ info] [engine] service has stopped (0 pending tasks)
[2025/07/28 19:18:09] [ info] [input] pausing dummy.0
[2025/07/28 19:18:09] [ info] [output:s3:s3.0] thread worker #0 stopping...
[2025/07/28 19:18:09] [ info] [output:s3:s3.0] Sending all locally buffered data to S3
[2025/07/28 19:18:09] [ info] [output:s3:s3.0] thread worker #0 stopped
[2025/07/28 19:18:09] [ info] [output:s3:s3.0] Pre-compression chunk size is 2016, After compression, chunk is 1002 bytes
[2025/07/28 19:18:09] [debug] [upstream] KA connection #32 to s3.us-east-2.amazonaws.com:443 has been assigned (recycled)
[2025/07/28 19:18:09] [debug] [http_client] not using http_proxy for header
[2025/07/28 19:18:09] [debug] [aws_credentials] Requesting credentials from the env provider..
[2025/07/28 19:18:10] [debug] [upstream] KA connection #32 to s3.us-east-2.amazonaws.com:443 is now available
[2025/07/28 19:18:10] [debug] [output:s3:s3.0] PutObject http status=200
[2025/07/28 19:18:10] [ info] [output:s3:s3.0] Successfully uploaded object /fluent-bit-logs/dummy.local/2025/07/28/10/17/57-objectKvzl4lte

Install columnify with:

$ go install github.com/reproio/columnify/cmd/columnify@latest
# ...
$ which columnify
/path/to/columnify
$ echo $?
0

• Attached Valgrind output that shows no leaks or memory corruption was found

==234222== 
==234222== HEAP SUMMARY:
==234222==     in use at exit: 0 bytes in 0 blocks
==234222==   total heap usage: 20,870 allocs, 20,870 frees, 5,028,035 bytes allocated
==234222== 
==234222== All heap blocks were freed -- no leaks are possible
==234222== 
==234222== Use --track-origins=yes to see where uninitialised values come from
==234222== For lists of detected and suppressed errors, rerun with: -s
==234222== ERROR SUMMARY: 17 errors from 5 contexts (suppressed: 0 from 0)

If this is a change to packaging of containers or native binaries then please confirm it works for all targets.

• Run local packaging test showing all targets (including any new ones) build.
• Set ok-package-test label to test for all targets (requires maintainer to do).

Documentation

• Documentation required for this feature

fluent/fluent-bit-docs#1380

Backporting

• Backport to latest stable release.

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Fluent Bit is licensed under Apache 2.0, by submitting this pull request I understand that this code will be released under the terms of that license.

[bilalmughal]

Hi! Is there any update or ETA on merging this PR? We'd love to make use of the Parquet with S3. Thanks

[cosmo0920]

This could be superseded by #10691.

[agup006]

Closing this in favor of #10691