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License: Other
LSM tree implementation based on standard B-Tree
License: Other
PostgreSQL Database Management System ===================================== This directory contains the source code distribution of the PostgreSQL database management system. PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings. PostgreSQL has many language interfaces, many of which are listed here: http://www.postgresql.org/download See the file INSTALL for instructions on how to build and install PostgreSQL. That file also lists supported operating systems and hardware platforms and contains information regarding any other software packages that are required to build or run the PostgreSQL system. Copyright and license information can be found in the file COPYRIGHT. A comprehensive documentation set is included in this distribution; it can be read as described in the installation instructions. The latest version of this software may be obtained at http://www.postgresql.org/download/. For more information look at our web site located at http://www.postgresql.org/.
HI, lsm3 index more larger than btree index:
postgres=# create index idx on t using lsm3(id) with (unique=true);
postgres=# insert into t select generate_series(1,10000000), md5(random()::text);
postgres=# \dt+ t
List of relations
Schema | Name | Type | Owner | Persistence | Size | Description
--------+------+-------+----------+-------------+--------+-------------
public | t | table | postgres | permanent | 651 MB |
public | idx | index | postgres | t | permanent | 69 GB |
Hi i am running for postgres version 13.0. when issuing command "create extension lsm3" after make install and shared library . I am getting ERROR: invalid function number 4, must be between 1 and 3. how to remove that error
I have added several lsm3 indexes to a table and am now bulk-loading data in to it using COPY t FROM STDIN
via psql. I am getting "WARNING: you don't own a lock of type RowExclusiveLock" 2-6 times per 100000 rows. The rows do get inserted, so this might be ignore-able?
I just did the same bulk-load using btree indexes without the lsm3 extension loaded and I do not get the warnings.
I am on PostgreSQL 13.3 on Debian. If there is any additional information I can provide, let me know.
I got following error while making it:
lsm3.h:46:9: error: unknown type name ‘BTOptions’
46 | BTOptions nbt_opts; /* Standard B-Tree options */
| ^~~~~~~~~
lsm3.c: In function ‘lsm3_truncate_index’:
lsm3.c:209:32: error: implicit declaration of function ‘BuildDummyIndexInfo’; did you mean ‘BuildIndexInfo’? [-Werror=implicit-function-declaration]
209 | IndexInfo* indexInfo = BuildDummyIndexInfo(index);
| ^~~~~~~~~~~~~~~~~~~
| BuildIndexInfo
lsm3.c:209:32: warning: initialization of ‘IndexInfo *’ from ‘int’ makes pointer from integer without a cast [-Wint-conversion]
lsm3.c: In function ‘lsm3_merge_indexes’:
lsm3.c:236:37: error: ‘BTREE_AM_OID’ undeclared (first use in this function); did you mean ‘BTREE_MAGIC’?
236 | base_index->rd_rel->relam = BTREE_AM_OID;
| ^~~~~~~~~~~~
| BTREE_MAGIC
lsm3.c:236:37: note: each undeclared identifier is reported only once for each function it appears in
lsm3.c:243:21: error: implicit declaration of function ‘BTreeTupleIsPosting’ [-Werror=implicit-function-declaration]
243 | if (BTreeTupleIsPosting(itup))
HI,
when i drop the lsm3 index and reindex it, will generate error like below:
postgres=# drop index idx;
DROP INDEX
postgres=# create index idx on t using lsm3(id) with (unique=true);
ERROR: relation "idx_top0" already exists
If you stop a concurrently created index, the drop fails with an error.
If I add lsm3 to preloaded libraries I get this error:
cannot request additional shared memory outside shmem_request_hook
During the concurrent index creation on a big table, I was executing parallel inserts, and at some point the inserts deadlocked on "LWLock: lsm3"
WHen i run postgres in eclipse this error is shown. ERROR: Lsm3: this extension should be loaded via shared_preload_libraries
but when i run them in psql its doing fine. I added shared_preload_libraries ='lsm3' to install/data/postgresql.conf
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