$ for n in $(seq 1 701); do echo "{ts:$n}"; done | zq -z 'fork (=>pass =>pass) | merge this' -
{ts:1}
{ts:1}
{ts:2}
{ts:2}
...
{ts:699}
{ts:700}
Details
Repro is with Zed commit 491dadf.
The repro shown above runs fine if the upper end of the seq is 700, but once I change it to 701, it hangs. I originally found this in the Zed lake context, where the magic crossover was when the upper end of the seq went from 54656 (works ok) to 54657 (hangs).
I also noticed it doesn't happen if I instead do merge ts, which indeed is probably what a user would have intended here. But #3678 leads me to believe merge this should be acceptable.
tl;dr
This hangs for me:
Details
Repro is with Zed commit 491dadf.
The repro shown above runs fine if the upper end of the
seqis700, but once I change it to701, it hangs. I originally found this in the Zed lake context, where the magic crossover was when the upper end of theseqwent from54656(works ok) to54657(hangs).I also noticed it doesn't happen if I instead do
merge ts, which indeed is probably what a user would have intended here. But #3678 leads me to believemerge thisshould be acceptable.