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体验新版 GitCode,发现更多精彩内容 >>
提交
1c030777
编写于
8月 01, 2016
作者:
T
Tristan Su
提交者:
Tristan Su
8月 01, 2016
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电子邮件补丁
差异文件
fix several typos
上级
058ac4f9
变更
3
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3 changed file
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+4
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src/backend/access/bitmap/README
src/backend/access/bitmap/README
+1
-1
src/backend/access/nbtree/README
src/backend/access/nbtree/README
+1
-1
src/backend/cdb/cdbvars.c
src/backend/cdb/cdbvars.c
+2
-2
未找到文件。
src/backend/access/bitmap/README
浏览文件 @
1c030777
...
@@ -14,7 +14,7 @@ indexes are much less expensive to construct than b-trees.
...
@@ -14,7 +14,7 @@ indexes are much less expensive to construct than b-trees.
Hybrid Run-Length (HRL) equality encoding bitmap index
Hybrid Run-Length (HRL) equality encoding bitmap index
------------------------------------------------------
------------------------------------------------------
HRL is the bitmap encoding mechanism used in this implemention. In HRL,
HRL is the bitmap encoding mechanism used in this implement
at
ion. In HRL,
each vector is represented in two sections: the header section and the
each vector is represented in two sections: the header section and the
content section. The header section contains bits, each of which
content section. The header section contains bits, each of which
corresponds to a word in the content section. If a bit in the header
corresponds to a word in the content section. If a bit in the header
...
...
src/backend/access/nbtree/README
浏览文件 @
1c030777
...
@@ -46,7 +46,7 @@ Lehman and Yao don't require read locks, but assume that in-memory
...
@@ -46,7 +46,7 @@ Lehman and Yao don't require read locks, but assume that in-memory
copies of tree pages are unshared. Postgres shares in-memory buffers
copies of tree pages are unshared. Postgres shares in-memory buffers
among backends. As a result, we do page-level read locking on btree
among backends. As a result, we do page-level read locking on btree
pages in order to guarantee that no record is modified while we are
pages in order to guarantee that no record is modified while we are
examining it. This reduces concurrency but guarantee
e
s correct
examining it. This reduces concurrency but guarantees correct
behavior. An advantage is that when trading in a read lock for a
behavior. An advantage is that when trading in a read lock for a
write lock, we need not re-read the page after getting the write lock.
write lock, we need not re-read the page after getting the write lock.
Since we're also holding a pin on the shared buffer containing the
Since we're also holding a pin on the shared buffer containing the
...
...
src/backend/cdb/cdbvars.c
浏览文件 @
1c030777
...
@@ -533,7 +533,7 @@ assign_gp_session_role(const char *newval, bool doit, GucSource source __attribu
...
@@ -533,7 +533,7 @@ assign_gp_session_role(const char *newval, bool doit, GucSource source __attribu
/*
/*
* Assign hook routine for "gp_role" option. This variabl
l
e has context
* Assign hook routine for "gp_role" option. This variable has context
* PGC_SUSET so that is can only be set by a superuser via the SET command.
* PGC_SUSET so that is can only be set by a superuser via the SET command.
* (It can also be set using an option on postmaster start, but this isn't
* (It can also be set using an option on postmaster start, but this isn't
* interesting beccause the derived global CdbRole is always set (along with
* interesting beccause the derived global CdbRole is always set (along with
...
@@ -615,7 +615,7 @@ assign_gp_role(const char *newval, bool doit, GucSource source)
...
@@ -615,7 +615,7 @@ assign_gp_role(const char *newval, bool doit, GucSource source)
/*
/*
* Assign hook routine for "gp_connections_per_thread" option. This variabl
l
e has context
* Assign hook routine for "gp_connections_per_thread" option. This variable has context
* PGC_SUSET so that is can only be set by a superuser via the SET command.
* PGC_SUSET so that is can only be set by a superuser via the SET command.
* (It can also be set in config file, but not inside of PGOPTIONS.)
* (It can also be set in config file, but not inside of PGOPTIONS.)
*
*
...
...
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