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doc,stream: _transform cannot be called in parallel #14321

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doc,stream: _transform cannot be called in parallel #14321

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mcollina
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Add a note to the stream docs specifying that at most a single
call to _transform can happen, and the provided callback()
should be used to process another chunk.

Fixes: #3208

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Affected core subsystem(s)

doc, stream

@nodejs-github-bot nodejs-github-bot added doc Issues and PRs related to the documentations. stream Issues and PRs related to the stream subsystem. labels Jul 17, 2017
@mcollina
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CI: https://ci.nodejs.org/job/node-test-pull-request/9188/

cc @Trott

Trott
Trott approved these changes Jul 17, 2017
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LGTM with or without nits addressed.

doc/api/stream.md Outdated
@@ -2033,6 +2033,10 @@ The `transform._transform()` method is prefixed with an underscore because it
is internal to the class that defines it, and should never be called directly by
user programs.

`transform._transform` is never called in parallel: streams implement a
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Nit: _transform -> _transform()

Nit: : -> ;

doc/api/stream.md Outdated
@@ -2033,6 +2033,10 @@ The `transform._transform()` method is prefixed with an underscore because it
is internal to the class that defines it, and should never be called directly by
user programs.

`transform._transform` is never called in parallel: streams implement a
queue mechanism, and to receive the next chunk `callback` must be
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Nit: next chunk -> next chunk,

@mcollina
doc,stream: _transform happens one at a time
90df48c 
Add a note to the stream docs specifying that at most a single
call to _transform can happen, and the provided callback()
should be used to process another chunk.

Fixes: nodejs#3208
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@Trott good spot, way better.

jasnell
jasnell reviewed Jul 17, 2017
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doc/api/stream.md
@@ -2033,6 +2033,10 @@ The `transform._transform()` method is prefixed with an underscore because it
is internal to the class that defines it, and should never be called directly by
user programs.

`transform._transform()` is never called in parallel; streams implement a
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minor nit: extra space here before "parallel"

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Landed as 0e5283b

@mcollina mcollina closed this Jul 19, 2017
mcollina added a commit that referenced this pull request Jul 19, 2017
@mcollina
doc,stream: _transform happens one at a time
0e5283b 
Add a note to the stream docs specifying that at most a single
call to _transform can happen, and the provided callback()
should be used to process another chunk.

Fixes: #3208
PR-URL: #14321
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
addaleax pushed a commit that referenced this pull request Jul 22, 2017
@mcollina @addaleax
doc,stream: _transform happens one at a time
87d78f4 
Add a note to the stream docs specifying that at most a single
call to _transform can happen, and the provided callback()
should be used to process another chunk.

Fixes: #3208
PR-URL: #14321
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Fishrock123 pushed a commit that referenced this pull request Jul 24, 2017
@mcollina @Fishrock123
doc,stream: _transform happens one at a time
53ad91c 
Add a note to the stream docs specifying that at most a single
call to _transform can happen, and the provided callback()
should be used to process another chunk.

Fixes: #3208
PR-URL: #14321
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
@addaleax addaleax mentioned this pull request Jul 24, 2017
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@addaleax addaleax mentioned this pull request Aug 2, 2017
Merged
MylesBorins pushed a commit that referenced this pull request Aug 16, 2017
@mcollina @MylesBorins
doc,stream: _transform happens one at a time
9cf46f2 
Add a note to the stream docs specifying that at most a single
call to _transform can happen, and the provided callback()
should be used to process another chunk.

Fixes: #3208
PR-URL: #14321
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
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@mcollina i landed this on v6.x-staging, lmk if it is incorrect

@mcollina mcollina deleted the fix-3208 branch August 16, 2017 07:43
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It's ok.

@MylesBorins MylesBorins mentioned this pull request Aug 16, 2017
Merged
MylesBorins pushed a commit that referenced this pull request Aug 16, 2017
@mcollina @MylesBorins
doc,stream: _transform happens one at a time
1a8bf8a 
Add a note to the stream docs specifying that at most a single
call to _transform can happen, and the provided callback()
should be used to process another chunk.

Fixes: #3208
PR-URL: #14321
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
MylesBorins pushed a commit that referenced this pull request Sep 3, 2017
@mcollina @MylesBorins
doc,stream: _transform happens one at a time
92b5462 
Add a note to the stream docs specifying that at most a single
call to _transform can happen, and the provided callback()
should be used to process another chunk.

Fixes: #3208
PR-URL: #14321
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
MylesBorins pushed a commit that referenced this pull request Sep 5, 2017
@mcollina @MylesBorins
doc,stream: _transform happens one at a time
d6ab8e2 
Add a note to the stream docs specifying that at most a single
call to _transform can happen, and the provided callback()
should be used to process another chunk.

Fixes: #3208
PR-URL: #14321
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
This was referenced Sep 5, 2017
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@jasnell jasnell jasnell approved these changes

@Trott Trott Trott approved these changes

@benjamingr benjamingr benjamingr approved these changes

@lpinca lpinca lpinca approved these changes

@cjihrig cjihrig cjihrig approved these changes

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streams - request for docs: can _transform or _write(v) be called in parallel?
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@mcollina @MylesBorins @jasnell @Trott @benjamingr @lpinca @cjihrig @nodejs-github-bot