In order to query series inside blocks from object storage, the store-gateway has to know certain initial info from each block index. In order to achieve so, the store-gateway builds an index-header for each block and stores it on local disk; such index-header is built by downloading specific pieces of original block’s index and storing them on local disk. Index header is then used by store-gateway at query time. Store-gateways build the index-header with specific sections of the block’s ...
