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diff --git a/storage/cassandra/cassandra_se.cc b/storage/cassandra/cassandra_se.cc
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+
+// Cassandra includes:
+#include <inttypes.h>
+#include <netinet/in.h>
+#include <sys/time.h>
+#include <stdio.h>
+#include <stdarg.h>
+
+#include "thrift/Thrift.h"
+#include "thrift/transport/TSocket.h"
+#include "thrift/transport/TTransport.h"
+#include "thrift/transport/TBufferTransports.h"
+#include "thrift/protocol/TProtocol.h"
+#include "thrift/protocol/TBinaryProtocol.h"
+#include "gen-cpp/Cassandra.h"
+// cassandra includes end
+
+#include "cassandra_se.h"
+
+struct st_mysql_lex_string
+{
+ char *str;
+ size_t length;
+};
+
+using namespace std;
+using namespace apache::thrift;
+using namespace apache::thrift::transport;
+using namespace apache::thrift::protocol;
+using namespace org::apache::cassandra;
+
+
+/*
+ Implementation of connection to one Cassandra column family (ie., table)
+*/
+class Cassandra_se_impl: public Cassandra_se_interface
+{
+ CassandraClient *cass; /* Connection to cassandra */
+
+ std::string column_family;
+ std::string keyspace;
+
+ ConsistencyLevel::type write_consistency;
+ ConsistencyLevel::type read_consistency;
+
+ /* Connection data */
+ std::string host;
+ int port;
+ /* How many times to retry an operation before giving up */
+ int thrift_call_retries_to_do;
+
+ bool inside_try_operation;
+
+ /* DDL data */
+ KsDef ks_def; /* KeySpace we're using (TODO: put this in table->share) */
+ CfDef cf_def; /* Column family we're using (TODO: put in table->share)*/
+ std::vector<ColumnDef>::iterator column_ddl_it;
+
+ /* The list that was returned by the last key lookup */
+ std::vector<ColumnOrSuperColumn> column_data_vec;
+ std::vector<ColumnOrSuperColumn>::iterator column_data_it;
+
+ /* Insert preparation */
+ typedef std::map<std::string, std::vector<Mutation> > ColumnFamilyToMutation;
+ typedef std::map<std::string, ColumnFamilyToMutation> KeyToCfMutationMap;
+
+ KeyToCfMutationMap batch_mutation; /* Prepare operation here */
+ int64_t insert_timestamp;
+ std::vector<Mutation>* insert_list;
+
+ /* Resultset we're reading */
+ std::vector<KeySlice> key_slice_vec;
+ std::vector<KeySlice>::iterator key_slice_it;
+
+ std::string rowkey; /* key of the record we're returning now */
+
+ SlicePredicate slice_pred;
+ SliceRange slice_pred_sr;
+ bool get_slices_returned_less;
+ bool get_slice_found_rows;
+
+ bool reconnect();
+public:
+ Cassandra_se_impl() : cass(NULL),
+ write_consistency(ConsistencyLevel::ONE),
+ read_consistency(ConsistencyLevel::ONE),
+ thrift_call_retries_to_do(1),
+ inside_try_operation(false)
+ {}
+ virtual ~Cassandra_se_impl(){ delete cass; }
+
+ /* Connection and DDL checks */
+ bool connect(const char *host_arg, int port_arg, const char *keyspace);
+ void set_column_family(const char *cfname) { column_family.assign(cfname); }
+
+ bool setup_ddl_checks();
+ void first_ddl_column();
+ bool next_ddl_column(char **name, int *name_len, char **value, int *value_len);
+ void get_rowkey_type(char **name, char **type);
+ size_t get_ddl_size();
+ const char* get_default_validator();
+
+ /* Settings */
+ void set_consistency_levels(unsigned long read_cons_level, unsigned long write_cons_level);
+ virtual void set_n_retries(uint retries_arg) {
+ thrift_call_retries_to_do= retries_arg;
+ }
+
+ /* Writes */
+ void clear_insert_buffer();
+ void start_row_insert(const char *key, int key_len);
+ void add_insert_column(const char *name, int name_len,
+ const char *value, int value_len);
+ void add_insert_delete_column(const char *name, int name_len);
+ void add_row_deletion(const char *key, int key_len,
+ Column_name_enumerator *col_names,
+ LEX_STRING *names, uint nnames);
+
+ bool do_insert();
+
+ /* Reads, point lookups */
+ bool get_slice(char *key, size_t key_len, bool *found);
+ bool get_next_read_column(char **name, int *name_len,
+ char **value, int *value_len );
+ void get_read_rowkey(char **value, int *value_len);
+
+ /* Reads, multi-row scans */
+private:
+ bool have_rowkey_to_skip;
+ std::string rowkey_to_skip;
+
+ bool get_range_slices_param_last_key_as_start_key;
+public:
+ bool get_range_slices(bool last_key_as_start_key);
+ void finish_reading_range_slices();
+ bool get_next_range_slice_row(bool *eof);
+
+ /* Setup that's necessary before a multi-row read. (todo: use it before point lookups, too) */
+ void clear_read_columns();
+ void clear_read_all_columns();
+ void add_read_column(const char *name);
+
+ /* Reads, MRR scans */
+ void new_lookup_keys();
+ int add_lookup_key(const char *key, size_t key_len);
+ bool multiget_slice();
+
+ bool get_next_multiget_row();
+
+ bool truncate();
+
+ bool remove_row();
+
+private:
+ bool retryable_truncate();
+ bool retryable_do_insert();
+ bool retryable_remove_row();
+ bool retryable_setup_ddl_checks();
+ bool retryable_multiget_slice();
+ bool retryable_get_range_slices();
+ bool retryable_get_slice();
+
+ std::vector<std::string> mrr_keys; /* can we use allocator to put these into MRR buffer? */
+ std::map<std::string, std::vector<ColumnOrSuperColumn> > mrr_result;
+ std::map<std::string, std::vector<ColumnOrSuperColumn> >::iterator mrr_result_it;
+
+ /* Non-inherited utility functions: */
+ int64_t get_i64_timestamp();
+
+ typedef bool (Cassandra_se_impl::*retryable_func_t)();
+ bool try_operation(retryable_func_t func);
+};
+
+
+/////////////////////////////////////////////////////////////////////////////
+// Connection and setup
+/////////////////////////////////////////////////////////////////////////////
+Cassandra_se_interface *create_cassandra_se()
+{
+ return new Cassandra_se_impl;
+}
+
+
+bool Cassandra_se_impl::connect(const char *host_arg, int port_arg, const char *keyspace_arg)
+{
+ keyspace.assign(keyspace_arg);
+ host.assign(host_arg);
+ port= port_arg;
+ return reconnect();
+}
+
+
+bool Cassandra_se_impl::reconnect()
+{
+
+ delete cass;
+ cass= NULL;
+
+ bool res= true;
+ try {
+ boost::shared_ptr<TTransport> socket =
+ boost::shared_ptr<TSocket>(new TSocket(host.c_str(), port));
+ boost::shared_ptr<TTransport> tr =
+ boost::shared_ptr<TFramedTransport>(new TFramedTransport (socket));
+ boost::shared_ptr<TProtocol> p =
+ boost::shared_ptr<TBinaryProtocol>(new TBinaryProtocol(tr));
+
+ cass= new CassandraClient(p);
+ tr->open();
+ cass->set_keyspace(keyspace.c_str());
+
+ res= false; // success
+ }catch(TTransportException te){
+ print_error("%s [%d]", te.what(), te.getType());
+ }catch(InvalidRequestException ire){
+ print_error("%s [%s]", ire.what(), ire.why.c_str());
+ }catch(NotFoundException nfe){
+ print_error("%s", nfe.what());
+ }catch(TException e){
+ print_error("Thrift exception: %s", e.what());
+ }catch (...) {
+ print_error("Unknown exception");
+ }
+
+ if (!res && setup_ddl_checks())
+ res= true;
+ return res;
+}
+
+
+void Cassandra_se_impl::set_consistency_levels(unsigned long read_cons_level,
+ unsigned long write_cons_level)
+{
+ write_consistency= (ConsistencyLevel::type)(write_cons_level + 1);
+ read_consistency= (ConsistencyLevel::type)(read_cons_level + 1);
+}
+
+
+bool Cassandra_se_impl::retryable_setup_ddl_checks()
+{
+ try {
+
+ cass->describe_keyspace(ks_def, keyspace);
+
+ } catch (NotFoundException nfe) {
+ print_error("keyspace `%s` not found: %s", keyspace.c_str(), nfe.what());
+ return true;
+ }
+
+ std::vector<CfDef>::iterator it;
+ for (it= ks_def.cf_defs.begin(); it < ks_def.cf_defs.end(); it++)
+ {
+ cf_def= *it;
+ if (!cf_def.name.compare(column_family))
+ return false;
+ }
+
+ print_error("Column family %s not found in keyspace %s",
+ column_family.c_str(),
+ keyspace.c_str());
+ return true;
+}
+
+bool Cassandra_se_impl::setup_ddl_checks()
+{
+ return try_operation(&Cassandra_se_impl::retryable_setup_ddl_checks);
+}
+
+
+void Cassandra_se_impl::first_ddl_column()
+{
+ column_ddl_it= cf_def.column_metadata.begin();
+}
+
+
+bool Cassandra_se_impl::next_ddl_column(char **name, int *name_len,
+ char **type, int *type_len)
+{
+ if (column_ddl_it == cf_def.column_metadata.end())
+ return true;
+
+ *name= (char*)(*column_ddl_it).name.c_str();
+ *name_len= (*column_ddl_it).name.length();
+
+ *type= (char*)(*column_ddl_it).validation_class.c_str();
+ *type_len= (*column_ddl_it).validation_class.length();
+
+ column_ddl_it++;
+ return false;
+}
+
+
+void Cassandra_se_impl::get_rowkey_type(char **name, char **type)
+{
+ if (cf_def.__isset.key_validation_class)
+ *type= (char*)cf_def.key_validation_class.c_str();
+ else
+ *type= NULL;
+
+ if (cf_def.__isset.key_alias)
+ *name= (char*)cf_def.key_alias.c_str();
+ else
+ *name= NULL;
+}
+
+size_t Cassandra_se_impl::get_ddl_size()
+{
+ return cf_def.column_metadata.size();
+}
+
+const char* Cassandra_se_impl::get_default_validator()
+{
+ return cf_def.default_validation_class.c_str();
+}
+
+
+/////////////////////////////////////////////////////////////////////////////
+// Data writes
+/////////////////////////////////////////////////////////////////////////////
+int64_t Cassandra_se_impl::get_i64_timestamp()
+{
+ struct timeval td;
+ gettimeofday(&td, NULL);
+ int64_t ms = td.tv_sec;
+ ms = ms * 1000;
+ int64_t usec = td.tv_usec;
+ usec = usec / 1000;
+ ms += usec;
+
+ return ms;
+}
+
+
+void Cassandra_se_impl::clear_insert_buffer()
+{
+ batch_mutation.clear();
+}
+
+
+void Cassandra_se_impl::start_row_insert(const char *key, int key_len)
+{
+ std::string key_to_insert;
+ key_to_insert.assign(key, key_len);
+ batch_mutation[key_to_insert]= ColumnFamilyToMutation();
+ ColumnFamilyToMutation& cf_mut= batch_mutation[key_to_insert];
+
+ cf_mut[column_family]= std::vector<Mutation>();
+ insert_list= &cf_mut[column_family];
+
+ insert_timestamp= get_i64_timestamp();
+}
+
+
+void Cassandra_se_impl::add_row_deletion(const char *key, int key_len,
+ Column_name_enumerator *col_names,
+ LEX_STRING *names, uint nnames)
+{
+ std::string key_to_delete;
+ key_to_delete.assign(key, key_len);
+
+ batch_mutation[key_to_delete]= ColumnFamilyToMutation();
+ ColumnFamilyToMutation& cf_mut= batch_mutation[key_to_delete];
+
+ cf_mut[column_family]= std::vector<Mutation>();
+ std::vector<Mutation> &mutation_list= cf_mut[column_family];
+
+ Mutation mut;
+ mut.__isset.deletion= true;
+ mut.deletion.__isset.timestamp= true;
+ mut.deletion.timestamp= get_i64_timestamp();
+ mut.deletion.__isset.predicate= true;
+
+ /*
+ Attempting to delete columns with SliceRange causes exception with message
+ "Deletion does not yet support SliceRange predicates".
+
+ Delete all columns individually.
+ */
+ SlicePredicate slice_pred;
+ slice_pred.__isset.column_names= true;
+ const char *col_name;
+ while ((col_name= col_names->get_next_name()))
+ slice_pred.column_names.push_back(std::string(col_name));
+ for (uint i= 0; i < nnames; i++)
+ slice_pred.column_names.push_back(std::string(names[i].str,
+ names[i].length));
+
+ mut.deletion.predicate= slice_pred;
+
+ mutation_list.push_back(mut);
+}
+
+
+void Cassandra_se_impl::add_insert_column(const char *name,
+ int name_len,
+ const char *value,
+ int value_len)
+{
+ Mutation mut;
+ mut.__isset.column_or_supercolumn= true;
+ mut.column_or_supercolumn.__isset.column= true;
+
+ Column& col=mut.column_or_supercolumn.column;
+ if (name_len)
+ col.name.assign(name, name_len);
+ else
+ col.name.assign(name);
+ col.value.assign(value, value_len);
+ col.timestamp= insert_timestamp;
+ col.__isset.value= true;
+ col.__isset.timestamp= true;
+ insert_list->push_back(mut);
+}
+
+void Cassandra_se_impl::add_insert_delete_column(const char *name,
+ int name_len)
+{
+ Mutation mut;
+ mut.__isset.deletion= true;
+ mut.deletion.__isset.timestamp= true;
+ mut.deletion.timestamp= insert_timestamp;
+ mut.deletion.__isset.predicate= true;
+
+ SlicePredicate slice_pred;
+ slice_pred.__isset.column_names= true;
+ slice_pred.column_names.push_back(std::string(name, name_len));
+ mut.deletion.predicate= slice_pred;
+
+ insert_list->push_back(mut);
+}
+
+
+bool Cassandra_se_impl::retryable_do_insert()
+{
+ cass->batch_mutate(batch_mutation, write_consistency);
+
+ cassandra_counters.row_inserts+= batch_mutation.size();
+ cassandra_counters.row_insert_batches++;
+
+ clear_insert_buffer();
+ return 0;
+}
+
+
+bool Cassandra_se_impl::do_insert()
+{
+ /*
+ zero-size mutations are allowed by Cassandra's batch_mutate but lets not
+ do them (we may attempt to do it if there is a bulk insert that stores
+ exactly @@cassandra_insert_batch_size*n elements.
+ */
+ if (batch_mutation.empty())
+ return false;
+
+ return try_operation(&Cassandra_se_impl::retryable_do_insert);
+}
+
+
+/////////////////////////////////////////////////////////////////////////////
+// Reading data
+/////////////////////////////////////////////////////////////////////////////
+
+/*
+ Make one key lookup. If the record is found, the result is stored locally and
+ the caller should iterate over it.
+*/
+
+bool Cassandra_se_impl::get_slice(char *key, size_t key_len, bool *found)
+{
+ bool res;
+ rowkey.assign(key, key_len);
+
+ if (!(res= try_operation(&Cassandra_se_impl::retryable_get_slice)))
+ *found= get_slice_found_rows;
+ return res;
+}
+
+
+bool Cassandra_se_impl::retryable_get_slice()
+{
+ ColumnParent cparent;
+ cparent.column_family= column_family;
+
+ SlicePredicate slice_pred;
+ SliceRange sr;
+ sr.start = "";
+ sr.finish = "";
+ slice_pred.__set_slice_range(sr);
+
+ cass->get_slice(column_data_vec, rowkey, cparent, slice_pred,
+ read_consistency);
+
+ if (column_data_vec.size() == 0)
+ {
+ /*
+ No columns found. Cassandra doesn't allow records without any column =>
+ this means the seach key doesn't exist
+ */
+ get_slice_found_rows= false;
+ return false;
+ }
+ get_slice_found_rows= true;
+
+ column_data_it= column_data_vec.begin();
+ return false;
+}
+
+
+bool Cassandra_se_impl::get_next_read_column(char **name, int *name_len,
+ char **value, int *value_len)
+{
+ bool use_counter=false;
+ while (1)
+ {
+ if (column_data_it == column_data_vec.end())
+ return true;
+
+ if ((*column_data_it).__isset.column)
+ break; /* Ok it's a real column. Should be always the case. */
+
+ if ((*column_data_it).__isset.counter_column)
+ {
+ use_counter= true;
+ break;
+ }
+
+ column_data_it++;
+ }
+
+ ColumnOrSuperColumn& cs= *column_data_it;
+ if (use_counter)
+ {
+ *name_len= cs.counter_column.name.size();
+ *name= (char*)cs.counter_column.name.c_str();
+ *value= (char*)&cs.counter_column.value;
+ *value_len= sizeof(cs.counter_column.value);
+ }
+ else
+ {
+ *name_len= cs.column.name.size();
+ *name= (char*)cs.column.name.c_str();
+ *value= (char*)cs.column.value.c_str();
+ *value_len= cs.column.value.length();
+ }
+
+ column_data_it++;
+ return false;
+}
+
+
+/* Return the rowkey for the record that was read */
+
+void Cassandra_se_impl::get_read_rowkey(char **value, int *value_len)
+{
+ *value= (char*)rowkey.c_str();
+ *value_len= rowkey.length();
+}
+
+
+bool Cassandra_se_impl::get_range_slices(bool last_key_as_start_key)
+{
+ get_range_slices_param_last_key_as_start_key= last_key_as_start_key;
+
+ return try_operation(&Cassandra_se_impl::retryable_get_range_slices);
+}
+
+
+bool Cassandra_se_impl::retryable_get_range_slices()
+{
+ bool last_key_as_start_key= get_range_slices_param_last_key_as_start_key;
+
+ ColumnParent cparent;
+ cparent.column_family= column_family;
+
+ /* SlicePredicate can be used to limit columns we will retrieve */
+
+ KeyRange key_range;
+ key_range.__isset.start_key= true;
+ key_range.__isset.end_key= true;
+
+ if (last_key_as_start_key)
+ {
+ key_range.start_key= rowkey;
+
+ have_rowkey_to_skip= true;
+ rowkey_to_skip= rowkey;
+ }
+ else
+ {
+ have_rowkey_to_skip= false;
+ key_range.start_key.assign("", 0);
+ }
+
+ key_range.end_key.assign("", 0);
+ key_range.count= read_batch_size;
+
+ cass->get_range_slices(key_slice_vec, cparent, slice_pred, key_range,
+ read_consistency);
+
+ if (key_slice_vec.size() < (uint)read_batch_size)
+ get_slices_returned_less= true;
+ else
+ get_slices_returned_less= false;
+
+ key_slice_it= key_slice_vec.begin();
+ return false;
+}
+
+
+/* Switch to next row. This may produce an error */
+bool Cassandra_se_impl::get_next_range_slice_row(bool *eof)
+{
+restart:
+ if (key_slice_it == key_slice_vec.end())
+ {
+ if (get_slices_returned_less)
+ {
+ *eof= true;
+ return false;
+ }
+
+ /*
+ We have read through all columns in this batch. Try getting the next
+ batch.
+ */
+ if (get_range_slices(true))
+ return true;
+
+ if (key_slice_vec.empty())
+ {
+ *eof= true;
+ return false;
+ }
+ }
+
+ /*
+ (1) - skip the last row that we have read in the previous batch.
+ (2) - Rows that were deleted show up as rows without any columns. Skip
+ them, like CQL does.
+ */
+ if ((have_rowkey_to_skip && !rowkey_to_skip.compare(key_slice_it->key)) || // (1)
+ key_slice_it->columns.size() == 0) // (2)
+ {
+ key_slice_it++;
+ goto restart;
+ }
+
+ *eof= false;
+ column_data_vec= key_slice_it->columns;
+ rowkey= key_slice_it->key;
+ column_data_it= column_data_vec.begin();
+ key_slice_it++;
+ return false;
+}
+
+
+void Cassandra_se_impl::finish_reading_range_slices()
+{
+ key_slice_vec.clear();
+}
+
+
+void Cassandra_se_impl::clear_read_columns()
+{
+ slice_pred.column_names.clear();
+}
+
+void Cassandra_se_impl::clear_read_all_columns()
+{
+ slice_pred_sr.start = "";
+ slice_pred_sr.finish = "";
+ slice_pred.__set_slice_range(slice_pred_sr);
+}
+
+
+void Cassandra_se_impl::add_read_column(const char *name_arg)
+{
+ std::string name(name_arg);
+ slice_pred.__isset.column_names= true;
+ slice_pred.column_names.push_back(name);
+}
+
+
+bool Cassandra_se_impl::truncate()
+{
+ return try_operation(&Cassandra_se_impl::retryable_truncate);
+}
+
+
+bool Cassandra_se_impl::retryable_truncate()
+{
+ cass->truncate(column_family);
+ return 0;
+}
+
+
+bool Cassandra_se_impl::remove_row()
+{
+ return try_operation(&Cassandra_se_impl::retryable_remove_row);
+}
+
+
+bool Cassandra_se_impl::retryable_remove_row()
+{
+ ColumnPath column_path;
+ column_path.column_family= column_family;
+ cass->remove(rowkey, column_path, get_i64_timestamp(), write_consistency);
+ return 0;
+}
+
+/*
+ Try calling a function, catching possible Cassandra errors, and re-trying
+ for "transient" errors.
+*/
+bool Cassandra_se_impl::try_operation(retryable_func_t func_to_call)
+{
+ bool res;
+ int n_attempts= thrift_call_retries_to_do;
+
+ bool was_inside_try_operation= inside_try_operation;
+ inside_try_operation= true;
+
+ do
+ {
+ res= true;
+
+ try {
+
+ if ((res= (this->*func_to_call)()))
+ {
+ /*
+ The function call was made successfully (without timeouts, etc),
+ but something inside it returned 'true'.
+ This is supposedly a failure (or "not found" or other negative
+ result). We need to return this to the caller.
+ */
+ n_attempts= 0;
+ }
+
+ } catch (InvalidRequestException ire) {
+ n_attempts= 0; /* there is no point in retrying this operation */
+ print_error("%s [%s]", ire.what(), ire.why.c_str());
+ } catch (UnavailableException ue) {
+ cassandra_counters.unavailable_exceptions++;
+ if (!--n_attempts)
+ print_error("UnavailableException: %s", ue.what());
+ } catch (TimedOutException te) {
+ /*
+ Note: this is a timeout generated *inside Cassandra cluster*.
+ Connection between us and the cluster is ok, but something went wrong
+ within the cluster.
+ */
+ cassandra_counters.timeout_exceptions++;
+ if (!--n_attempts)
+ print_error("TimedOutException: %s", te.what());
+ } catch (TTransportException tte) {
+ /* Something went wrong in communication between us and Cassandra */
+ cassandra_counters.network_exceptions++;
+
+ switch (tte.getType())
+ {
+ case TTransportException::NOT_OPEN:
+ case TTransportException::TIMED_OUT:
+ case TTransportException::END_OF_FILE:
+ case TTransportException::INTERRUPTED:
+ {
+ if (!was_inside_try_operation && reconnect())
+ {
+ /* Failed to reconnect, no point to retry the operation */
+ n_attempts= 0;
+ print_error("%s", tte.what());
+ }
+ else
+ {
+ n_attempts--;
+ }
+ break;
+ }
+ default:
+ {
+ /*
+ We assume it doesn't make sense to retry for
+ unknown kinds of TTransportException-s
+ */
+ n_attempts= 0;
+ print_error("%s", tte.what());
+ }
+ }
+ }catch(TException e){
+ /* todo: we may use retry for certain kinds of Thrift errors */
+ n_attempts= 0;
+ print_error("Thrift exception: %s", e.what());
+ } catch (...) {
+ n_attempts= 0; /* Don't retry */
+ print_error("Unknown exception");
+ }
+
+ } while (res && n_attempts > 0);
+
+ inside_try_operation= was_inside_try_operation;
+ return res;
+}
+
+/////////////////////////////////////////////////////////////////////////////
+// MRR reads
+/////////////////////////////////////////////////////////////////////////////
+
+void Cassandra_se_impl::new_lookup_keys()
+{
+ mrr_keys.clear();
+}
+
+
+int Cassandra_se_impl::add_lookup_key(const char *key, size_t key_len)
+{
+ mrr_keys.push_back(std::string(key, key_len));
+ return mrr_keys.size();
+}
+
+bool Cassandra_se_impl::multiget_slice()
+{
+ return try_operation(&Cassandra_se_impl::retryable_multiget_slice);
+}
+
+
+bool Cassandra_se_impl::retryable_multiget_slice()
+{
+ ColumnParent cparent;
+ cparent.column_family= column_family;
+
+ SlicePredicate slice_pred;
+ SliceRange sr;
+ sr.start = "";
+ sr.finish = "";
+ slice_pred.__set_slice_range(sr);
+
+ cassandra_counters.multiget_reads++;
+ cassandra_counters.multiget_keys_scanned += mrr_keys.size();
+ cass->multiget_slice(mrr_result, mrr_keys, cparent, slice_pred,
+ read_consistency);
+
+ cassandra_counters.multiget_rows_read += mrr_result.size();
+ mrr_result_it= mrr_result.begin();
+
+ return false;
+}
+
+
+bool Cassandra_se_impl::get_next_multiget_row()
+{
+ if (mrr_result_it == mrr_result.end())
+ return true; /* EOF */
+
+ column_data_vec= mrr_result_it->second;
+ rowkey= mrr_result_it->first;
+
+ column_data_it= column_data_vec.begin();
+ mrr_result_it++;
+ return false;
+}
+
+
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-09-13 11:53:02 +0000