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Ran 24 May 2026 07:50AM UTC

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Build # 26355568768

Build Type

push

github

Committed by

Slach

Commit Message

test/integration: clear empty shadow/increment.txt in connectWithWait
look details https://github.com/ClickHouse/ClickHouse/issues/105719

Workaround for a race in ClickHouse src/Common/CounterInFile.h: concurrent
FREEZE/UNFREEZE on a fresh shadow/ dir can leave shadow/increment.txt at
size 0. After that every subsequent FREEZE fails permanently with
code 32 "File ... is empty. You must fill it manually", and every test
that issues FREEZE in the same container (TestGCS, etc.) breaks.

Reproduced on clickhouse/clickhouse-server:26.3.4 with parallel
FREEZE+UNFREEZE: 6 hits / 38400 ops. The race itself is acknowledged in
ClickHouse's Increment doc comment ("when the first file is created, the
race condition is possible"); there is no self-heal — ClickHouse refuses
to interpret an empty file as 0.

Detect the size-0 sentinel before each test connects and remove it so
ClickHouse recreates it correctly on the next FREEZE.

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