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Commit25a2eec

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Merge branch 'master' of github.com:postgrespro/pg_pathman
2 parents299d025 +8447815 commit25a2eec

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3 files changed

+11
-18
lines changed

3 files changed

+11
-18
lines changed

‎README.md

Lines changed: 5 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -32,9 +32,11 @@ Based on partitioning type and operator the `pg_pathman` searches corresponding
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##Roadmap
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* Optimize the execution of the NestedLoop join method;
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* LIST-partitioning;
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* HASH-partitioning for non integer attributes.
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* Execute time sections selections (useful for nested loops and prepared statements);
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* Optimization of ordering output from patitioned tables (useful for merge join and order by);
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* Optimization of hash join when both tables are patitioned by join key;
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* LIST-patitioning;
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* HASH-patitioning by non integer attribtes.
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##Installation
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‎README.rus.md

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@@ -34,9 +34,11 @@ WHERE id = 150
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##Roadmap
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* Оптимизация поиска секции для соединения (join) таблиц методом NestedLoop;
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* LIST-секционирование;
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* HASH-секционирование по ключевому аттрибуту с типом, отличным от INTEGER.
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* Выбор секций на этапе выполнения запроса (полезно для nested loop join, prepared statements);
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* Оптимизация выдачи упорядоченных результатов из секционированных таблиц (полезно для merge join, order by);
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* Оптимизация hash join для случая, когда обе таблицы секционированы по ключу join’а;
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* LIST-секционирование;
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* HASH-секционирование по ключевому атрибуту с типом, отличным от INTEGER.
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##Установка
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‎init.c

Lines changed: 1 addition & 12 deletions
Original file line numberDiff line numberDiff line change
@@ -18,12 +18,6 @@ HTAB *relations = NULL;
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HTAB*range_restrictions=NULL;
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boolinitialization_needed= true;
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typedefstructShmemConfig
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{
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boolconfig_loaded;
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}ShmemConfig;
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ShmemConfig*shmem_cfg;
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staticFmgrInfo*qsort_type_cmp_func;
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staticboolglobalByVal;
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@@ -34,12 +28,8 @@ static int cmp_range_entries(const void *p1, const void *p2);
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void
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init_shmem_config()
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{
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boolfound;
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create_relations_hashtable();
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create_range_restrictions_hashtable();
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shmem_cfg= (ShmemConfig*)
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ShmemInitStruct("pathman shmem config",sizeof(ShmemConfig),&found);
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shmem_cfg->config_loaded= false;
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}
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/*
@@ -54,12 +44,11 @@ load_config(void)
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new_segment_created=init_dsm_segment(INITIAL_BLOCKS_COUNT,32);
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/* if config is not loaded */
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if (shmem_cfg&& !shmem_cfg->config_loaded)
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if (new_segment_created)
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{
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LWLockAcquire(load_config_lock,LW_EXCLUSIVE);
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load_relations_hashtable(new_segment_created);
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LWLockRelease(load_config_lock);
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shmem_cfg->config_loaded= true;
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}
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}
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