issue: https://github.com/milvus-io/milvus/issues/46678
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- Core invariant: Text index log keys are canonicalized at KV
(serialization) boundaries — etcd stores compressed filename-only
entries, while in-memory and runtime consumers must receive full
object-storage keys so Datanode/QueryNode can load text indexes
directly.
- Logic removed/simplified: ad-hoc reconstruction of full text-log paths
scattered across components (garbage_collector.getTextLogs,
querynodev2.LoadTextIndex, compactor/index task code) was removed;
consumers now use TextIndexStats.Files as-provided (full keys). Path
compression/decompression was centralized into KV marshal/unmarshal
utilities (metautil.ExtractTextLogFilenames in marshalSegmentInfo and
metautil.BuildTextLogPaths in kv_catalog.listSegments), eliminating
redundant, inconsistent prefix-rebuilding logic that broke during
rolling upgrades.
- Why this does NOT cause data loss or regressions: before persist,
marshalSegmentInfo compresses TextStatsLogs.Files to filenames
(metautil.ExtractTextLogFilenames) so stored KV remains compact; on
load, kv_catalog.listSegments calls metautil.BuildTextLogPaths to
restore full paths and includes compatibility logic that leaves
already-full keys unchanged. Thus every persisted filename is
recoverable to a valid full key and consumers receive correct full paths
(see marshalSegmentInfo → KV write path and kv_catalog.listSegments →
reload path), preventing dropped or malformed keys.
- Bug fix (refs #46678): resolves text-log loading failures during
cluster upgrades by centralizing path handling at KV encode/decode and
removing per-component path reconstruction — the immediate fix is
changing consumers to read TextIndexStats.Files directly and relying on
marshal/unmarshal to perform compression/expansion, preventing
mixed-format failures during rolling upgrades.
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Signed-off-by: sijie-ni-0214 <sijie.ni@zilliz.com>
941c6eaed7