-# Copyright (C) 2018 all contributors <meta@public-inbox.org>
+# Copyright (C) 2018-2019 all contributors <meta@public-inbox.org>
# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
# This interface wraps and mimics PublicInbox::Import
my $PACKING_FACTOR = 0.4;
# SATA storage lags behind what CPUs are capable of, so relying on
-# nproc(1) can be misleading and having extra Xapian partions is a
+# nproc(1) can be misleading and having extra Xapian shards is a
# waste of FDs and space. It can also lead to excessive IO latency
# and slow things down. Users on NVME or other fast storage can
# use the NPROC env or switches in our script/public-inbox-* programs
-# to increase Xapian partitions.
+# to increase Xapian shards
our $NPROC_MAX_DEFAULT = 4;
-sub nproc_parts ($) {
+sub nproc_shards ($) {
my ($creat_opt) = @_;
if (ref($creat_opt) eq 'HASH') {
if (defined(my $n = $creat_opt->{nproc})) {
sub count_shards ($) {
my ($self) = @_;
- my $nparts = 0;
+ my $n = 0;
my $xpfx = $self->{xpfx};
- # always load existing partitions in case core count changes:
+ # always load existing shards in case core count changes:
# Also, shard count may change while -watch is running
# due to "xcpdb --reshard"
if (-d $xpfx) {
- foreach my $part (<$xpfx/*>) {
- -d $part && $part =~ m!/[0-9]+\z! or next;
+ foreach my $shard (<$xpfx/*>) {
+ -d $shard && $shard =~ m!/[0-9]+\z! or next;
eval {
- Search::Xapian::Database->new($part)->close;
- $nparts++;
+ Search::Xapian::Database->new($shard)->close;
+ $n++;
};
}
}
- $nparts;
+ $n;
}
sub new {
rotate_bytes => int((1024 * 1024 * 1024) / $PACKING_FACTOR),
last_commit => [], # git repo -> commit
};
- $self->{shards} = count_shards($self) || nproc_parts($creat);
+ $self->{shards} = count_shards($self) || nproc_shards($creat);
bless $self, $class;
}
sub do_idx ($$$$$$$) {
my ($self, $msgref, $mime, $len, $num, $oid, $mid0) = @_;
$self->{over}->add_overview($mime, $len, $num, $oid, $mid0);
- my $npart = $self->{shards};
- my $part = $num % $npart;
- my $idx = idx_part($self, $part);
+ my $idx = idx_shard($self, $num % $self->{shards});
$idx->index_raw($len, $msgref, $num, $oid, $mid0, $mime);
my $n = $self->{transact_bytes} += $len;
- $n >= (PublicInbox::SearchIdx::BATCH_BYTES * $npart);
+ $n >= (PublicInbox::SearchIdx::BATCH_BYTES * $self->{shards});
}
sub _add {
$num;
}
-sub idx_part {
- my ($self, $part) = @_;
- $self->{idx_parts}->[$part];
+sub idx_shard {
+ my ($self, $shard_i) = @_;
+ $self->{idx_shards}->[$shard_i];
}
# idempotent
sub idx_init {
my ($self, $opt) = @_;
- return if $self->{idx_parts};
+ return if $self->{idx_shards};
my $ibx = $self->{-inbox};
# do not leak read-only FDs to child processes, we only have these
$over->create;
# xcpdb can change shard count while -watch is idle
- my $nparts = count_shards($self);
- if ($nparts && $nparts != $self->{shards}) {
- $self->{shards} = $nparts;
+ my $nshards = count_shards($self);
+ if ($nshards && $nshards != $self->{shards}) {
+ $self->{shards} = $nshards;
}
- # need to create all parts before initializing msgmap FD
+ # need to create all shards before initializing msgmap FD
my $max = $self->{shards} - 1;
- # idx_parts must be visible to all forked processes
- my $idx = $self->{idx_parts} = [];
+ # idx_shards must be visible to all forked processes
+ my $idx = $self->{idx_shards} = [];
for my $i (0..$max) {
push @$idx, PublicInbox::SearchIdxShard->new($self, $i);
}
}
my $over = $self->{over};
my $cids = content_ids($old_mime);
- my $parts = $self->{idx_parts};
my $removed;
my $mids = mids($old_mime->header_obj);
$rewritten->{rewrites};
}
-sub last_commit_part ($$;$) {
+sub last_epoch_commit ($$;$) {
my ($self, $i, $cmt) = @_;
my $v = PublicInbox::Search::SCHEMA_VERSION();
$self->{mm}->last_commit_xap($v, $i, $cmt);
foreach my $i (0..$epoch_max) {
defined(my $cmt = $last_commit->[$i]) or next;
$last_commit->[$i] = undef;
- last_commit_part($self, $i, $cmt);
+ last_epoch_commit($self, $i, $cmt);
}
}
while (scalar keys %$barrier) {
defined(my $l = $r->getline) or die "EOF on barrier_wait: $!";
$l =~ /\Abarrier (\d+)/ or die "bad line on barrier_wait: $l";
- delete $barrier->{$1} or die "bad part[$1] on barrier wait";
+ delete $barrier->{$1} or die "bad shard[$1] on barrier wait";
}
}
$im->checkpoint;
}
}
- my $parts = $self->{idx_parts};
- if ($parts) {
+ my $shards = $self->{idx_shards};
+ if ($shards) {
my $dbh = $self->{mm}->{dbh};
# SQLite msgmap data is second in importance
# Now deal with Xapian
if ($wait) {
- my $barrier = $self->barrier_init(scalar @$parts);
+ my $barrier = $self->barrier_init(scalar @$shards);
- # each partition needs to issue a barrier command
- $_->remote_barrier for @$parts;
+ # each shard needs to issue a barrier command
+ $_->remote_barrier for @$shards;
- # wait for each Xapian partition
+ # wait for each Xapian shard
$self->barrier_wait($barrier);
} else {
- $_->remote_commit for @$parts;
+ $_->remote_commit for @$shards;
}
# last_commit is special, don't commit these until
- # remote partitions are done:
+ # remote shards are done:
$dbh->begin_work;
set_last_commits($self);
$dbh->commit;
checkpoint($self);
my $mm = delete $self->{mm};
$mm->{dbh}->commit if $mm;
- my $parts = delete $self->{idx_parts};
- if ($parts) {
- $_->remote_close for @$parts;
+ my $shards = delete $self->{idx_shards};
+ if ($shards) {
+ $_->remote_close for @$shards;
}
$self->{over}->disconnect;
delete $self->{bnote};
$self->{transact_bytes} = 0;
- $self->lock_release if $parts;
+ $self->lock_release if $shards;
$self->{-inbox}->git->cleanup;
}
my ($self) = @_;
my $fh = delete $self->{reindex_pipe};
close $fh if $fh;
- if (my $parts = $self->{idx_parts}) {
- $_->atfork_child foreach @$parts;
+ if (my $shards = $self->{idx_shards}) {
+ $_->atfork_child foreach @$shards;
}
if (my $im = $self->{im}) {
$im->atfork_child;
# only update last_commit for $i on reindex iff newer than current
sub update_last_commit ($$$$) {
my ($self, $git, $i, $cmt) = @_;
- my $last = last_commit_part($self, $i);
+ my $last = last_epoch_commit($self, $i);
if (defined $last && is_ancestor($git, $last, $cmt)) {
my @cmd = (qw(rev-list --count), "$last..$cmt");
chomp(my $n = $git->qx(@cmd));
return if $n ne '' && $n == 0;
}
- last_commit_part($self, $i, $cmt);
+ last_epoch_commit($self, $i, $cmt);
}
sub git_dir_n ($$) { "$_[0]->{-inbox}->{mainrepo}/git/$_[1].git" }
my ($self, $epoch_max) = @_;
my $heads = [];
for (my $i = $epoch_max; $i >= 0; $i--) {
- $heads->[$i] = last_commit_part($self, $i);
+ $heads->[$i] = last_epoch_commit($self, $i);
}
$heads;
}
for (my $i = $epoch_max; $i >= 0; $i--) {
die 'BUG: already indexing!' if $self->{reindex_pipe};
my $git_dir = git_dir_n($self, $i);
- -d $git_dir or next; # missing parts are fine
+ -d $git_dir or next; # missing epochs are fine
my $git = PublicInbox::Git->new($git_dir);
if ($reindex_heads) {
$head = $reindex_heads->[$i] or next;
sub unindex_oid_remote ($$$) {
my ($self, $oid, $mid) = @_;
- $_->remote_remove($oid, $mid) foreach @{$self->{idx_parts}};
+ $_->remote_remove($oid, $mid) foreach @{$self->{idx_shards}};
$self->{over}->remove_oid($oid, $mid);
}
my $git_dir = git_dir_n($self, $i);
die 'BUG: already reindexing!' if $self->{reindex_pipe};
- -d $git_dir or return; # missing parts are fine
+ -d $git_dir or return; # missing epochs are fine
fill_alternates($self, $i);
my $git = PublicInbox::Git->new($git_dir);
if (my $unindex_range = delete $sync->{unindex_range}->{$i}) {