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MDEV-20672 Inconsistent usage message for innodb_compression_algorithm

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The usage message for the innodb_compression_algorithm system variable
did not list snappy, which was added as an optional compression algorithm
in MariaDB 10.1.3 and might actually work since
commit 90c52e5291b3ad0935df7da56ec0fcbf530733b4 (MDEV-12615)
in MariaDB 10.1.24.

Unfortunately, we will include also unavailable compression algorithms
in the list, because ENUM parameters allow numeric values, and we do
not want innodb_compression_algorithm=3 to change meaning depending on
the way how the source code was compiled.
This commit is contained in:
Marko Mäkelä 2020-08-12 18:35:21 +03:00
parent efd8af535a
commit 101ce10d0d
3 changed files with 3 additions and 3 deletions
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2
mysql-test/suite/sys_vars/r/sysvars_innodb.result
View File

@ -502,7 +502,7 @@ GLOBAL_VALUE_ORIGIN COMPILE-TIME
DEFAULT_VALUE zlib
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE ENUM
VARIABLE_COMMENT Compression algorithm used on page compression. One of: none, zlib, lz4, lzo, lzma, or bzip2
VARIABLE_COMMENT Compression algorithm used on page compression. One of: none, zlib, lz4, lzo, lzma, bzip2, or snappy
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL

2
storage/innobase/handler/ha_innodb.cc
View File

@ -19862,7 +19862,7 @@ static TYPELIB page_compression_algorithms_typelib=
};
static MYSQL_SYSVAR_ENUM(compression_algorithm, innodb_compression_algorithm,
PLUGIN_VAR_OPCMDARG,
"Compression algorithm used on page compression. One of: none, zlib, lz4, lzo, lzma, or bzip2",
"Compression algorithm used on page compression. One of: none, zlib, lz4, lzo, lzma, bzip2, or snappy",
innodb_compression_algorithm_validate, NULL,
/* We use here the largest number of supported compression method to
enable all those methods that are available. Availability of compression

2
storage/xtradb/handler/ha_innodb.cc
View File

@ -21141,7 +21141,7 @@ static TYPELIB page_compression_algorithms_typelib=
};
static MYSQL_SYSVAR_ENUM(compression_algorithm, innodb_compression_algorithm,
PLUGIN_VAR_OPCMDARG,
"Compression algorithm used on page compression. One of: none, zlib, lz4, lzo, lzma, or bzip2",
"Compression algorithm used on page compression. One of: none, zlib, lz4, lzo, lzma, bzip2, or snappy",
innodb_compression_algorithm_validate, NULL,
/* We use here the largest number of supported compression method to
enable all those methods that are available. Availability of compression