Unreachable collections that present in blocks

⚙️ Flow SDKs Flow Go SDK
1

Recently there seems to be some cases where a collection is present in a block’s CollectionGuarantees but the collection is not accessible through GetCollection

So far I have encountered with this issue several times:

height   collection_hash
12000191 c5f4b105bddf47574c443b0fd971ba285d1cae88d2d59549a7aef3d0f7b789d1 
12023468 d33ff89b94f924052ec52ba17932e4fd4b8765df00acd681beab3ec8df5f3554 
12214718 fe2e49fa179df8c2952e1346f897caa6dbca0ca9e7d7c7e3c4ad7f499cc4ade0
12310920 4272858b1d76442d4fb7535b88999ccbc0c66b19e7cb922e2ff5ddab85fbbca2 
12367718 fa50a23d1e0b8c9357d938d47f602d22cfb0f7f869027c320ddc8fe8c2c32e26
12368306 988eb2bd30e8da1a0909c84c3c23883aad247cf801823aeb1e6a52434a5b2ba2
12353699 e35e88169f4cdcd68f76b32652ba08ba088df3ba67d9296adb864034f9e9b31a
12369551 e35e88169f4cdcd68f76b32652ba08ba088df3ba67d9296adb864034f9e9b31a
12371537 f9fee112c1d019f6b0babb62914afa06c643cef957af58d22e538fe78e02a353
12380977 937065a0f77c639b8412d89a8e82e91d82cd4bfd492f0aa56cda278b6220eb24
12381861 0cf762f358866b44fad9b79bc8ab31d5367b9ba82b3b8092a17e99719ecebece
12384326 63c9a04839783bc03e46b08d06d83a1693552edf4cfbcf95ce61e303b52a8661
12386060 fd406463a6316e78ae749bd49482c19506858672f4a76c9dc6298afd5a4944ed
12394217 d7da06b1cf42f83953151c5fb91ec465f766a048aa3b1e17ac1f283e223967d0
12394313 393cd784c9b3b148ebfd049a26384e86269e00c43de01917406731ce2fb9ab96
12394326 b27c1843f3e27226d57d704996b6cfc4de0618b5f850cf65c2c96b91f6770d68
12395314 c591caa69283aec9257a8a6fa24a3756dc2fd8670d1aa1a93f06318da00a5296
12395351 2e1036fe5843afb0d641f02bf825e3c485b791a252c2fa1c117d63dd84e3d258
12395955 9de2b5f071ac556159624dd7c1c5d5004541facfb2888a260d0911e7290cd1c7
12396350 7b3ba94992615cff99005256fb86e9b7273c5c13e063e5f1c8a3f266ba136a05
12396839 c97e1ac82848925ef0d53fc2f6d3cdd613e832c4452970cd38936559cc0c1b61
12396861 86f6c81e103bcff7331efa1c15bd52afa5447faf4675c21970828c6224bc4f41
12397029 eca3a22702c566d9010b7502edcbccce168c99f2258450cb130ce656fa6cd474
12397031 e25e36cf1bbdbb838d4d2ced74c98288880d122d31d68f42977153bdfa9c4707

There might be some more issues like this that I forgot to note, but this issue never happens before the first one at 12000191.
It would be nice if these cases can be investigated and fixed to get full data of the blockchain. Thank you!

3 Likes
2

I can confirm that I’m having same issues with those collections.
Today I discovered one more inaccessible collection
Height: 12353699
Collectioh hash: e35e88169f4cdcd68f76b32652ba08ba088df3ba67d9296adb864034f9e9b31a

3

More inaccessible collections today:

12369551 e35e88169f4cdcd68f76b32652ba08ba088df3ba67d9296adb864034f9e9b31a
12371537 f9fee112c1d019f6b0babb62914afa06c643cef957af58d22e538fe78e02a353
12378133 1f8a8610803848a9706f6af6ef0dd7fe67637d748396d1cab00d7c0d466e8488
4

Thanks for reporting this, @yondercode and @tadas_z. We’re looking into it, and I’ll post here once we know more!

1 Like
5

I checked with the protocol team; it turns out this is a known issue, and they’re actively working on a fix.

2 Likes
6

Thank you for the update, @pete

I also find that some collections which are accessible have transactions which are inaccessible. Using the default access node on block 12409833 with the collections:

71288df225aea0763b542c9d20320a857e31032ddd803f209c851918ee1300e7
578c72a8f17d243d20f8460f8e58ffe33b0d52a16fe6c7aaf6d750e1a5b8243f
6ed8d95ed486118b4718483cc62a19caaf293303e17f18fc2b1281e5aa42b72d

Errors when getting the transactions that is contained in those collections:

client: rpc error: code = NotFound desc = no known transaction with ID 5ce083e59d6ff852a84277ca7ed54abd447140a36002f8dba09940e95d532aa3
client: rpc error: code = NotFound desc = no known transaction with ID 001f92185720032bafc508681532b17b87a3e1b693bd6c1c06ea8df6c7188094
client: rpc error: code = NotFound desc = no known transaction with ID 938510a8d6ed30d89adafdc8cc5985bb5da35bc9d965460b391f3f9f8777d5ce
...

These might be related with the original issue?

1 Like
7

Thank you for the information @yondercode and @tadas_z! This helped us find a solution.

We’ve identified the root cause and are preparing a patch for release!

2 Likes
8

@pete I can see that all collections are now accessible except this one:
12000191 c5f4b105bddf47574c443b0fd971ba285d1cae88d2d59549a7aef3d0f7b789d1

Maybe because this node is still not patched with a fix? access-001.mainnet4.nodes.onflow.org:9000