datomic

rutledgepaulv 2026-03-20T14:31:34.713699Z

hi, I'm seeing a weird exception in one of our transactor logs when it's indexing (looks like an overflow). any suggestions on things I can do to prevent? ๐Ÿงต

rutledgepaulv 2026-03-20T14:33:09.230949Z

java.lang.NegativeArraySizeException: -305583505
at datomic.impl.JavaByteUtil.to7Bit(JavaByteUtil.java:52)
at $encode_base128.invokeStatic(io.clj:267)
at $encode_base128.invoke(io.clj:265)
at $bbuf__GT_base128.invokeStatic(io.clj:277)
at $bbuf__GT_base128.invoke(io.clj:273)
at datomic.ddb_values$put_value.invokeStatic(ddb_values.clj:66)
at datomic.ddb_values$put_value.invoke(ddb_values.clj:53)
at datomic.kv_dynamo.KVDynamo$fn__30896.invoke(kv_dynamo.clj:56)
at datomic.kv_dynamo.KVDynamo.put(kv_dynamo.clj:55)
at datomic.kv_cluster.KVCluster$doit__10679$fn__10683$fn__10684.invoke(kv_cluster.clj:154)
at datomic.kv_cluster$retry_fn$fn__10656.invoke(kv_cluster.clj:77)
at datomic.kv_cluster$retry_fn.invokeStatic(kv_cluster.clj:77)
at datomic.kv_cluster$retry_fn.invoke(kv_cluster.clj:51)
at clojure.lang.AFn.applyToHelper(AFn.java:178)
at clojure.lang.AFn.applyTo(AFn.java:144)
at clojure.core$apply.invokeStatic(core.clj:673)
at clojure.core$partial$fn__5914.doInvoke(core.clj:2660)
at clojure.lang.RestFn.invoke(RestFn.java:421)
at datomic.kv_cluster.KVCluster$doit__10679$fn__10683.invoke(kv_cluster.clj:153)
at datomic.kv_cluster.KVCluster$doit__10679.invoke(kv_cluster.clj:150)
at clojure.core$binding_conveyor_fn$fn__5823.invoke(core.clj:2047)
at datomic.future$filling_promise$f__9949.invoke(future.clj:31)
at clojure.lang.AFn.call(AFn.java:18)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
at java.base/java.lang.Thread.run(Thread.java:1575)

rutledgepaulv 2026-03-20T14:33:59.067369Z

retries for a while then transactor dies with ERROR default datomic.process - {:message "Terminating process - Indexing retry limit exceeded.", :pid 1, :tid 141}

rutledgepaulv 2026-03-20T14:34:50.486699Z

we do store some pretty large strings that should definitely be moved to external blobs, but I was hoping the transactor wouldn't accept a value that it can't index.

Joe Lane 2026-03-20T14:35:02.007909Z

Please open a support ticket immediately CC: @jaret

jaret 2026-03-20T14:36:26.177369Z

Can you send an e-mail to <mailto:support@datomic.com|support@datomic.com> to start the case or fill out ticket info here: https://support.cognitect.com/hc/en-us/requests/new

๐Ÿ‘ 1
jaret 2026-03-20T14:37:19.281979Z

Going to want: Version of Datomic peers and transactors. Transactor logs. What you are running transactor machines on (CPU, heap, etc) Transactor properties file

jaret 2026-03-20T14:38:28.481419Z

Might have you grab a JFR, but we can do the instructions for that over the ticket.

ghadi 2026-03-20T14:39:21.870219Z

Is this on 7556

Joe Lane 2026-03-20T14:40:28.074919Z

Comms on the ticket please

rutledgepaulv 2026-03-20T14:40:29.034729Z

will do, thanks. we have some options to workaround so not an emergency per se but would like to understand if there are any supported ways to fix when it happens and if it could be prevented. it's on 1.0.7491 atm

๐Ÿ‘ 1
jaret 2026-03-20T14:41:58.961529Z

We just need more information before we comment on the work around. Gotta know the exact cause here. Will work quickly on this once I see those logs and info above ^

๐Ÿ‘ 1
rutledgepaulv 2026-03-20T14:42:45.779409Z

thanks all, i'll send an email later today

rutledgepaulv 2026-03-20T20:27:13.811239Z

sorry ended up being a busy day for unrelated reasons, will get something together monday

๐Ÿ‘ 1
Joe Lane 2026-03-20T20:42:55.589649Z

Please include transactor logs from the time of the issue

๐Ÿ‘ 1
jaret 2026-03-25T12:34:04.077819Z

Hey Paul, I sent a response yesterday. Happy to chat when you've had time to review.

1
rutledgepaulv 2026-03-23T18:10:12.211649Z

sent an email over, thanks!

๐Ÿ‘ 1
jaret 2026-03-23T18:17:00.646669Z

Looking it over now