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提交 22cd2596 编写于 作者: M Mel Kiyama 提交者： David Yozie
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docs - update gp_toolkit AO AOCO functions (#10089) 

most functions have been updated to use regclass (oid or table name)
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Showing with 31 addition and 57 deletion
gpdb-doc/dita/ref_guide/gp_toolkit.xml
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......@@ -342,9 +342,7 @@
</body>
</topic>
</topic>
<topic id="topic8" xml:lang="en" ditaarch:DITAArchVersion="1.1"
domains="(topic ui-d) (topic hi-d) (topic pr-d) (topic sw-d) (topic ut-d) (topic indexing-d)"
class="- topic/topic ">
<topic id="topic8" xml:lang="en" class="- topic/topic ">
<title class="- topic/title ">Checking Append-Optimized Tables</title>
<body class="- topic/body ">
<p>The <codeph>gp_toolkit</codeph> schema includes a set of diagnostic functions you can use
......@@ -358,10 +356,9 @@
class="+ topic/ph pr-d/codeph ">VACUUM</codeph>. The hidden rows are tracked using an
auxiliary visibility map table, or visimap. </p>
<p>The following functions let you access the metadata for append-optimized and
column-oriented tables and view non-visible rows. Some of the functions have two versions:
one that takes the <codeph class="+ topic/ph pr-d/codeph ">oid</codeph> of the table, and
one that takes the name of the table. The latter version has "_name" appended to the
function name.</p>
column-oriented tables and view non-visible rows. </p>
<p>For most of the functions, the input argument is <codeph>regclass</codeph>, either the
table <codeph>name</codeph> or the <codeph>oid</codeph> of a table.</p>
</body>
<topic id="topic_ylp_gxw_yq">
<title>__gp_aovisimap_compaction_info(oid)</title>
......@@ -372,8 +369,10 @@
by a <codeph>VACUUM</codeph> operation on an append-optimized table.</p>
<note>Until a <cmdname>VACUUM</cmdname> operation deletes the row from the data file,
deleted or updated data rows occupy physical space on disk even though they are hidden to
new transactions. The configuration parameter <codeph>gp_appendonly_compaction</codeph>
controls the functionality of the <codeph>VACUUM</codeph> command.</note>
new transactions. The configuration parameter <codeph><xref
href="config_params/guc-list.xml#gp_appendonly_compaction"
>gp_appendonly_compaction</xref></codeph> controls the functionality of the
<codeph>VACUUM</codeph> command.</note>
<p>This table describes the <cmdname>__gp_aovisimap_compaction_info</cmdname> function
output table.</p>
<table id="table_wr2_dcv_mq">
......@@ -422,13 +421,12 @@
</table>
</body>
</topic>
<topic id="topic9" xml:lang="en" ditaarch:DITAArchVersion="1.1"
domains="(topic ui-d) (topic hi-d) (topic pr-d) (topic sw-d) (topic ut-d) (topic indexing-d)"
class="- topic/topic ">
<title class="- topic/title ">__gp_aoseg_name('table_name')</title>
<topic id="topic9" xml:lang="en">
<title class="- topic/title ">__gp_aoseg(regclass)</title>
<body class="- topic/body ">
<p>This function returns metadata information contained in the append-optimized table's
on-disk segment file. </p>
<p>The input argument is the name or the oid of an append-optimized table. </p>
<table id="ie202159" class="- topic/table ">
<title class="- topic/title ">__gp_aoseg_name output table</title>
<tgroup cols="2" class="- topic/tgroup ">
......@@ -481,18 +479,14 @@
</table>
</body>
</topic>
<topic id="topic10" xml:lang="en" ditaarch:DITAArchVersion="1.1"
domains="(topic ui-d) (topic hi-d) (topic pr-d) (topic sw-d) (topic ut-d) (topic indexing-d)"
class="- topic/topic ">
<title class="- topic/title ">__gp_aoseg_history(oid)</title>
<topic id="topic10" xml:lang="en" class="- topic/topic ">
<title class="- topic/title ">__gp_aoseg_history(regclass)</title>
<body class="- topic/body ">
<p>This function returns metadata information contained in the append-optimized table's
on-disk segment file. It displays all different versions (heap tuples) of the aoseg meta
information. The data is complex, but users with a deep understanding of the system may
find it usefulfor debugging.</p>
<p>The input argument is the oid of the append-optimized table. </p>
<p>Call __gp_aoseg_history_name('table_name') to get the same result with the table name as
an argument.</p>
find it useful for debugging.</p>
<p>The input argument is the name or the oid of an append-optimized table. </p>
<table id="ie202200" class="- topic/table ">
<title class="- topic/title ">__gp_aoseg_history output table</title>
<tgroup cols="2" class="- topic/tgroup ">
......@@ -590,17 +584,13 @@
</table>
</body>
</topic>
<topic id="topic11" xml:lang="en" ditaarch:DITAArchVersion="1.1"
domains="(topic ui-d) (topic hi-d) (topic pr-d) (topic sw-d) (topic ut-d) (topic indexing-d)"
class="- topic/topic ">
<title class="- topic/title ">__gp_aocsseg(oid)</title>
<topic id="topic11" xml:lang="en" class="- topic/topic ">
<title class="- topic/title ">__gp_aocsseg(regclass)</title>
<body class="- topic/body ">
<p>This function returns metadata information contained in a column-oriented
append-optimized table's on-disk segment file, excluding non-visible rows. Each row
describes a segment for a column in the table.</p>
<p>The input argument is the oid of a column-oriented append-optimized table. Call as
__gp_aocsseg_name('table_name') to get the same result with the table name as an
argument.</p>
<p>The input argument is the name or the oid of a column-oriented append-optimized table. </p>
<table id="ie202280" class="- topic/table ">
<title class="- topic/title ">__gp_aocsseg(oid) output table</title>
<tgroup cols="2" class="- topic/tgroup ">
......@@ -659,18 +649,14 @@
</table>
</body>
</topic>
<topic id="topic12" xml:lang="en" ditaarch:DITAArchVersion="1.1"
domains="(topic ui-d) (topic hi-d) (topic pr-d) (topic sw-d) (topic ut-d) (topic indexing-d)"
class="- topic/topic ">
<title class="- topic/title ">__gp_aocsseg_history(oid)</title>
<topic id="topic12" xml:lang="en" class="- topic/topic ">
<title class="- topic/title ">__gp_aocsseg_history(regclass)</title>
<body class="- topic/body ">
<p>This function returns metadata information contained in a column-oriented
append-optimized table's on-disk segment file. Each row describes a segment for a column
in the table. The data is complex, but users with a deep understanding of the system may
find it useful for debugging.</p>
<p>The input argument is the oid of a column-oriented append-optimized table. Call as
__gp_aocsseg_history_name('table_name') to get the same result with the table name as
argument.</p>
<p> The input argument is the name or the oid of a column-oriented append-optimized table. </p>
<table id="ie202328" class="- topic/table ">
<title class="- topic/title ">__gp_aocsseg_history output table</title>
<tgroup cols="2" class="- topic/tgroup ">
......@@ -775,16 +761,12 @@
</table>
</body>
</topic>
<topic id="topic13" xml:lang="en" ditaarch:DITAArchVersion="1.1"
domains="(topic ui-d) (topic hi-d) (topic pr-d) (topic sw-d) (topic ut-d) (topic indexing-d)"
class="- topic/topic ">
<title class="- topic/title ">__gp_aovisimap(oid)</title>
<topic id="topic13" xml:lang="en" class="- topic/topic ">
<title class="- topic/title ">__gp_aovisimap(regclass)</title>
<body class="- topic/body ">
<p>This function returns the tuple id, the segment file, and the row number of each
<p>This function returns the tuple ID, the segment file, and the row number of each
non-visible tuple according to the visibility map.</p>
<p>The input argument is the oid of an append-optimized table.</p>
<p>Use __gp_aovisimap_name('table_name') to get the same result with the table name as
argument.</p>
<p>The input argument is the name or the oid of an append-optimized table.</p>
<table id="ie202417" class="- topic/table ">
<tgroup cols="2" class="- topic/tgroup ">
<colspec colnum="1" colname="col1" colwidth="108pt" class="- topic/colspec "/>
......@@ -814,16 +796,12 @@
</table>
</body>
</topic>
<topic id="topic14" xml:lang="en" ditaarch:DITAArchVersion="1.1"
domains="(topic ui-d) (topic hi-d) (topic pr-d) (topic sw-d) (topic ut-d) (topic indexing-d)"
class="- topic/topic ">
<title class="- topic/title ">__gp_aovisimap_hidden_info(oid)</title>
<topic id="topic14" xml:lang="en" class="- topic/topic ">
<title class="- topic/title ">__gp_aovisimap_hidden_info(regclass)</title>
<body class="- topic/body ">
<p>This function returns the numbers of hidden and visible tuples in the segment files for
an append-optimized table.</p>
<p>The input argument is the oid of the append-optimized table. </p>
<p>Call __gp_aovisimap_hidden_info_name('table_name') to get the same result with a table
name argument.</p>
<p>The input argument is the name or the oid of an append-optimized table. </p>
<table id="ie202442" class="- topic/table ">
<tgroup cols="2" class="- topic/tgroup ">
<colspec colnum="1" colname="col1" colwidth="108pt" class="- topic/colspec "/>
......@@ -854,15 +832,11 @@
</table>
</body>
</topic>
<topic id="topic15" xml:lang="en" ditaarch:DITAArchVersion="1.1"
domains="(topic ui-d) (topic hi-d) (topic pr-d) (topic sw-d) (topic ut-d) (topic indexing-d)"
class="- topic/topic ">
<title class="- topic/title ">__gp_aovisimap_entry(oid) </title>
<topic id="topic15" xml:lang="en" class="- topic/topic ">
<title class="- topic/title ">__gp_aovisimap_entry(regclass) </title>
<body class="- topic/body ">
<p>This function returns information about each visibility map entry for the table.</p>
<p>The input argument is the oid of an append-optimized table.</p>
<p>Call __gp_aovisimap_entry_name('table_name') to get the same result with a table name
argument.</p>
<p>The input argument is the name or the oid of an append-optimized table.</p>
<table id="ie202467" class="- topic/table ">
<title class="- topic/title ">__gp_aovisimap_entry output table</title>
<tgroup cols="2" class="- topic/tgroup ">
......
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