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tsdb/index: export sentinel error for symbol table size exceeded

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Signed-off-by: Patryk Prus <p@trykpr.us>
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Patryk Prus 2026-02-10 12:44:06 -05:00
parent 90166d3ddb
commit d8c24c6bde
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1 changed files with 4 additions and 1 deletions
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5
tsdb/index/index.go
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@ -101,6 +101,9 @@ var ErrPostingsOffsetTableTooLarge = errors.New("length size exceeds 4 bytes")
// ErrIndexExceeds64GiB is returned when the index file would exceed the 64GiB limit.
var ErrIndexExceeds64GiB = errors.New("exceeding max size of 64GiB")
// ErrSymbolTableTooLarge is returned when the symbol table size exceeds 4 bytes (4GiB limit).
var ErrSymbolTableTooLarge = fmt.Errorf("symbol table size exceeds %d bytes", uint32(math.MaxUint32))
// The table gets initialized with sync.Once but may still cause a race
// with any other use of the crc32 package anywhere. Thus we initialize it
// before.
@ -550,7 +553,7 @@ func (w *Writer) finishSymbols() error {
symbolTableSize := w.f.pos - w.toc.Symbols - 4
// The symbol table's <len> part is 4 bytes. So the total symbol table size must be less than or equal to 2^32-1
if symbolTableSize > math.MaxUint32 {
return fmt.Errorf("symbol table size exceeds %d bytes: %d", uint32(math.MaxUint32), symbolTableSize)
return fmt.Errorf("%w: %d", ErrSymbolTableTooLarge, symbolTableSize)
}
// Write out the length and symbol count.