From d8c24c6bde7c3b3f03f6c3ef2a8c8c8238e8f789 Mon Sep 17 00:00:00 2001 From: Patryk Prus Date: Tue, 10 Feb 2026 12:44:06 -0500 Subject: [PATCH] tsdb/index: export sentinel error for symbol table size exceeded Signed-off-by: Patryk Prus --- tsdb/index/index.go | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/tsdb/index/index.go b/tsdb/index/index.go index 493264b87f..9b907bb7a7 100644 --- a/tsdb/index/index.go +++ b/tsdb/index/index.go @@ -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 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.