* s3tables, iceberg: log client refusals at V(1), not ERROR
Requests the S3 Tables and Iceberg REST APIs correctly refuse with a 4xx
(access denied, not authorized, no such namespace, already exists, not
empty, a commit conflict) were logged with glog.Errorf, so a client probing
for what it may do, or retrying an optimistic commit, filled the ERROR log
and hid real faults from anyone alerting on it.
- s3tables: HandleRequest wraps the ResponseWriter in a statusRecorder (with
Unwrap for http.ResponseController) and logs a handler error by the status
it answered: 4xx at V(1) as "<op> refused (<status>)", 5xx or no status at
ERROR as before.
- s3tables: the "handleCreateNamespace called" trace moves from ERROR to V(3).
- iceberg: writeManagerError's mapping is split into classifyManagerError,
shared with a new logManagerError that logs 4xx-mapped errors at V(1) and
everything else at ERROR; used by CreateNamespace, CommitTable and
CommitTransaction.
- storage: loading a remote-tier volume logged
"readSuperBlock remote volume N: <nil>" at ERROR even when the read
succeeded; it is now logged only when there is an error.
Tests: TestRequestRefusedWith4xxIsNotLoggedAsError, TestLogRequestErrorByStatus,
TestStatusRecorderKeepsTheFirstStatus, TestStatusRecorderUnwrapsForResponseController,
TestNoTraceLoggedAtErrorLevel (fails on master on the CreateNamespace trace),
TestLogManagerErrorRefusalsAreNotErrors, TestRemoteSuperBlockLogOnlyOnError.
* s3tables: do not log a malformed CreateNamespace body at ERROR
handleCreateNamespace logged a body it could not decode at ERROR before
answering 400; the dispatcher already logs that refusal once at V(1).
Also drop statusRecorder.Flush: it made the recorder an http.Flusher even
over a writer that cannot flush, so http.NewResponseController reported
success instead of ErrNotSupported. Unwrap already lets the controller
reach the wrapped writer.
* iceberg: require exactly one log line per classified manager error
The test accepted a refusal that produced no log, or both logs. Require
one V(1) refusal and no ERROR for a 4xx, and the reverse for a fault.
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Co-authored-by: Javier de la Torre <jatorre@lakehousebox.com>
