int ObGetScanProxy::build_get_column_filter(const ObGetParam& get_param, const int32_t offset,const int32_t size, ColumnFilter& cf) { int ret = OB_SUCCESS; cf.clear(); for(int32_t i=0; (OB_SUCCESS == ret) && (i < size); ++i) { ret = cf.add_column(get_param[offset + i]->column_id_); } return ret; }
int ObGetScanProxy::cs_scan(const ObScanParam& scan_param, ObScanner& scanner, ObIterator* it_out[],int64_t& it_size) { int ret = OB_SUCCESS; int64_t it_num = 0; if ((NULL == it_out) || it_size <= 0) { ret = OB_INVALID_ARGUMENT; } if ((OB_SUCCESS == ret) && ((ret = tablet_manager_.scan(scan_param, scanner)) != OB_SUCCESS)) { TBSYS_LOG(WARN, "failed to scan data from local chunk server, ret=%d", ret); } if (OB_SUCCESS == ret) { ObSSTableScanner *sstable_scanner = GET_TSI_MULT(ObSSTableScanner, TSI_CS_SSTABLE_SCANNER_1); if (NULL == sstable_scanner) { TBSYS_LOG(ERROR, "failed to get thread local sstable scanner, " "sstable_scanner=%p", sstable_scanner); ret = OB_ALLOCATE_MEMORY_FAILED; } else { tablet_range_.reset(); ret = scanner.get_range(tablet_range_); if (OB_SUCCESS == ret) { it_out[it_num++] = sstable_scanner; } else { TBSYS_LOG(WARN, "failed to get tablet range from scanner, ret=%d", ret); } } } if (OB_SUCCESS == ret) { int64_t query_version = 0; const ObVersionRange version_range = scan_param.get_version_range(); if (!version_range.border_flag_.is_max_value() && version_range.end_version_ != 0) { query_version = version_range.end_version_; } ObTablet*& scan_tablet = tablet_manager_.get_cur_thread_scan_tablet(); int32_t compactsstable_num = scan_tablet->get_compactsstable_num(); if (compactsstable_num > 0) { ObCompactSSTableMemNode* mem_node = scan_tablet->get_compactsstable_list(); ObCompactMemIteratorArray *its = GET_TSI_MULT(ObCompactMemIteratorArray,TSI_CS_COMPACTSSTABLE_ITERATOR_1); ColumnFilter* cf = GET_TSI_MULT(ColumnFilter,TSI_CS_COLUMNFILTER_1); ObCompactSSTableMem* mem = NULL; int64_t major_version = 0; int32_t i = 0; if ((NULL == mem_node) || (NULL == cf) || (NULL == its)) { TBSYS_LOG(WARN,"unexpect error,mem_node=%p,cf=%p,its=%p",mem_node,cf,its); ret = OB_ALLOCATE_MEMORY_FAILED; } else { cf->clear(); } if ((OB_SUCCESS == ret) && (NULL == (cf = ColumnFilter::build_columnfilter(scan_param, cf)))) { TBSYS_LOG(WARN,"build columnfilter failed"); ret = OB_ERROR; } for(i=0; (mem_node != NULL) && (i < compactsstable_num) && (OB_SUCCESS == ret) && (it_num < it_size);++i) { mem = &mem_node->mem_; if (NULL == mem) { TBSYS_LOG(WARN,"unexpect error,compact mem is null"); ret = OB_ERROR; } else { //query version just have major version major_version = mem->get_version_range().major_version_; if ((0 == query_version) || (query_version > 0 && major_version <= query_version)) { if ((ret = its->iters_[i].init(mem)) != OB_SUCCESS) { TBSYS_LOG(WARN,"init iterator of compact mem failed,ret=%d",ret); } else if ((ret = its->iters_[i].set_scan_param(*scan_param.get_range(),cf, scan_param.get_scan_direction() == ScanFlag::BACKWARD)) != OB_SUCCESS) { TBSYS_LOG(WARN,"set scan param failed,ret=%d",ret); } else { it_out[it_num++] = &its->iters_[i]; //set data version to the last compact sstable version scanner.set_data_version(mem->get_data_version()); FILL_TRACE_LOG("add compact iterator to merger,it_num:%ld,version:%ld",it_num,mem->get_data_version()); } } else { break; //got enough data } } mem_node = mem_node->next_; } //end for } //end compactsstable_num > 0 } if (OB_SUCCESS == ret) { it_size = it_num; } return ret; }