int ObMergerSortedOperator::add_sharding_result(ObScanner & sharding_res, const ObNewRange &query_range,
bool &is_finish)
{
int err = OB_SUCCESS;
if ((OB_SUCCESS == err) && (NULL == scan_param_))
{
TBSYS_LOG(WARN,"operator was not initialized yet [scan_param_:%p]", scan_param_);
err = OB_INVALID_ARGUMENT;
}
if ((OB_SUCCESS == err) && (sharding_result_count_ >= MAX_SHARDING_RESULT_COUNT))
{
TBSYS_LOG(WARN,"array is full [MAX_SHARDING_RESULT_COUNT:%ld,sharding_result_count_:%ld]",
MAX_SHARDING_RESULT_COUNT, sharding_result_count_);
err = OB_ARRAY_OUT_OF_RANGE;
}
/// @todo (wushi [email protected]) check fullfill item number and size property
bool is_fullfilled = false;
int64_t fullfilled_item_num = 0;
ObRowkey last_row_key;
ObNewRange cs_tablet_range;
if ((OB_SUCCESS == err) && (OB_SUCCESS != (err = sharding_res.get_is_req_fullfilled(is_fullfilled,fullfilled_item_num))))
{
TBSYS_LOG(WARN,"fail to get fullfilled info from sharding result [err:%d]", err);
}
if (OB_SUCCESS == err)
{
if (OB_SUCCESS == (err = sharding_res.get_last_row_key(last_row_key)))
{
}
else if (OB_ENTRY_NOT_EXIST == err)
{
err = OB_SUCCESS;
}
else
{
TBSYS_LOG(WARN,"fail to get last rowkey from sharding result [err:%d]", err);
}
}
if (OB_SUCCESS == err)
{
if (is_fullfilled)
{
if ((OB_SUCCESS == err) && (OB_SUCCESS != (err = sharding_res.get_range(cs_tablet_range))))
{
TBSYS_LOG(WARN,"fail to get tablet range from sharding result [err:%d]", err);
}
if (OB_SUCCESS == err)
{
if (ScanFlag::FORWARD == scan_param_->get_scan_direction())
{
last_row_key = cs_tablet_range.end_key_;
}
else
{
last_row_key = cs_tablet_range.start_key_;
}
}
}
if (OB_SUCCESS == err)
{
fullfilled_item_num = sharding_res.get_row_num();
sharding_result_arr_[sharding_result_count_].init(sharding_res,query_range,*scan_param_, last_row_key, fullfilled_item_num);
sharding_result_count_ ++;
}
}
is_finish = false;
if (OB_SUCCESS == err)
{
sort(is_finish, &sharding_res);
}
TBSYS_LOG(DEBUG, "add sharding result. is_finish=%d, err=%d", is_finish, err);
return err;
}
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;
}
int get_next_param(
const ObScanParam &org_scan_param, const ObScanner &prev_scan_result,
ObScanParam *scan_param, ObMemBuf &range_buffer)
{
int err = OB_SUCCESS;
const ObReadParam &org_read_param = org_scan_param;
ObReadParam *read_param = scan_param;
ObNewRange tablet_range;
const ObNewRange *org_scan_range = NULL;
ObNewRange cur_range;
if(NULL != scan_param)
{
scan_param->reset();
*read_param = org_read_param;
}
bool request_fullfilled = false;
int64_t fullfilled_row_num = 0;
err = prev_scan_result.get_is_req_fullfilled(request_fullfilled,fullfilled_row_num);
if (OB_SUCCESS == err)
{
org_scan_range = org_scan_param.get_range();
if (NULL == org_scan_range)
{
TBSYS_LOG(WARN, "unexpected error, can't get range from org scan param");
err = OB_INVALID_ARGUMENT;
}
}
ObRowkey last_row_key;
if (OB_SUCCESS == err)
{
if (request_fullfilled)
{
err = prev_scan_result.get_range(tablet_range);
if (OB_SUCCESS == err)
{
if (true == is_finish_scan(org_scan_param, tablet_range))
{
err = OB_ITER_END;
}
else if (ScanFlag::FORWARD == org_scan_param.get_scan_direction())
{
last_row_key = tablet_range.end_key_;
}
else
{
last_row_key = tablet_range.start_key_;
}
}
}
else
{
err = prev_scan_result.get_last_row_key(last_row_key);
if (OB_ENTRY_NOT_EXIST == err)
{
/// first time, remain unchanged
}
else if (OB_SUCCESS != err)
{
TBSYS_LOG(WARN, "unexpected error, scanner should contain at least one cell");
}
}
}
if (OB_SUCCESS == err && NULL != scan_param)
{
cur_range =*org_scan_range;
// forward
if (ScanFlag::FORWARD == org_scan_param.get_scan_direction())
{
cur_range.start_key_ = last_row_key;
cur_range.border_flag_.unset_inclusive_start();
}
else
{
cur_range.end_key_ = last_row_key;
if (request_fullfilled)
{
// tablet range start key
cur_range.border_flag_.set_inclusive_end();
}
else
{
// the smallest rowkey
cur_range.border_flag_.unset_inclusive_end();
}
}
}
// first time remain unchanged
if (OB_ENTRY_NOT_EXIST == err)
{
cur_range =*org_scan_range;
err = OB_SUCCESS;
}
if (OB_SUCCESS == err && NULL != scan_param)
{
err = allocate_range_buffer(cur_range, range_buffer);
}
if (OB_SUCCESS == err && NULL != scan_param)
{
scan_param->set(org_scan_param.get_table_id(), org_scan_param.get_table_name(), cur_range);
for (int32_t cell_idx = 0;
cell_idx < org_scan_param.get_column_id_size() && OB_SUCCESS == err;
cell_idx ++)
{
err = scan_param->add_column(org_scan_param.get_column_id()[cell_idx]);
}
if(OB_SUCCESS == err)
{
scan_param->set_scan_size(GET_SCAN_SIZE(org_scan_param.get_scan_size()));
scan_param->set_scan_flag(org_scan_param.get_scan_flag());
}
}
return err;
}