Apache Beam Portability Support Matrix

	A	B	C	D	E	F	G	H	I	J	K	L	M	N	O	P	Q	R	S	T	U	V	W	X	Y	Z	AA	AB	AC	AD	AE	AF	AG	AH
1	Apache Beam Portability Support Matrix - https://s.apache.org/apache-beam-portability-support-table
2	NOTE: This table may be out of date as of 2019.
3	This spreadsheet tracks the status of portability support across SDKs and runners. The goal is to identify the gaps and implementation irregularies.
4	The table represents the 4D status of "Feature\|Example x SDK x Runner x Batch\|Streaming" flattened as "Feature\|Example x (SDK x Runner x Batch\|Streaming)".
5
6	Legend
7		Works and has pre/post-commit regression test. Yay!
8		Works, based on manual verification. Test desirable.
9		"Should work". To be verified.
10	BEAM-xxx	Partially works. Cell should contain JIRA. Comment may contain elaboration. Consider splitting the row into "works" and "doesn't work" instead.
11	BEAM-xxx	Does not work. Cell should contain JIRA.
12		No information. To be evaluated.
13		N/A
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16	"What works?"			RUNNER x SDK x Batch\|Streaming
17
18				Direct (specific to each SDK and not necessarily portable)				Universal Local Runner			Flink (master)						Dataflow						Spark (master)						Samza
19				Java	Python		Go	Java	Python	Go	Java		Python		Go		Java		Python		Go		Java		Python		Go		Java		Python		Go
20	FEATURE			Batch\|Streaming	Batch	Streaming	Batch only	Batch\|Streaming	Batch\|Streaming	Batch\|Streaming	Batch	Streaming	Batch	Streaming	Batch	Streaming	Batch	Streaming	Batch	Streaming	Batch	Streaming	Batch	Streaming	Batch	Streaming	Batch	Streaming	Batch	Streaming	Batch	Streaming	Batch	Streaming
21		Impulse
22		ParDo
23			w/ side input					BEAM-2928		BEAM-3286					BEAM-3286	BEAM-3286					BEAM-3286	BEAM-3286					BEAM-3286	BEAM-3286			BEAM-7564	BEAM-7564	BEAM-7564	BEAM-7564
24			w/ multiple output
25			w/ user state				BEAM-3298	BEAM-2917/BEAM-2915		BEAM-2917/BEAM-3298					BEAM-2918/BEAM-3298	BEAM-2918/BEAM-3298	BEAM-2902	BEAM-2902	BEAM-2902	BEAM-2902	BEAM-2902/BEAM-3298	BEAM-2902/BEAM-3298					BEAM-2902/BEAM-3298	BEAM-2902/BEAM-3298			BEAM-7564	BEAM-7564	BEAM-7564	BEAM-7564
26			w/ user timers					BEAM-4680		BEAM-4680																					BEAM-7564	BEAM-7564	BEAM-7564	BEAM-7564
27			w/ user metrics					BEAM-5452		BEAM-5452																					BEAM-7564	BEAM-7564	BEAM-7564	BEAM-7564
28		Flatten
29			w/ explicit flatten							BEAM-3300					BEAM-3300	BEAM-3300					BEAM-3300	BEAM-3300					BEAM-3300	BEAM-3300
30		Combine
31			w/ first-class rep	BEAM-3708				BEAM-5453		BEAM-4276					BEAM-4276	BEAM-4276					BEAM-4276	BEAM-4276					BEAM-4276	BEAM-4276
32			w/ lifting	BEAM-3708				BEAM-4679		BEAM-4276					BEAM-4276	BEAM-4276					BEAM-4276	BEAM-4276					BEAM-4276	BEAM-4276
33		SDF						BEAM-3743		BEAM-3301					BEAM-3301	BEAM-3301					BEAM-3301	BEAM-3301					BEAM-3301	BEAM-3301
34			w/ liquid sharding	BEAM-4287
35		GBK
36		CoGBK
37		WindowInto
38			w/ sessions				BEAM-4152			BEAM-4152					BEAM-4152	BEAM-4152					BEAM-4152	BEAM-4152					BEAM-4152	BEAM-4152
39			w/ custom windowfn
40	EXAMPLE			Batch\|Streaming	Batch	Streaming	Batch only	Batch	Batch	Batch	Batch	Streaming	Batch	Streaming	Batch	Streaming	Batch	Streaming	Batch	Streaming	Batch	Streaming	Batch	Streaming	Batch	Streaming	Batch	Streaming	Batch	Streaming	Batch	Streaming	Batch	Streaming
41		WordCap																													BEAM-7566	BEAM-7566
42		WordCount																													BEAM-7566	BEAM-7566
43			w/ write to Sink
44			w/ write to GCS
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