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// Test cloneCollection command
var baseName = "jstests_clonecollection";
parallel = function() {
return t.parallelStatus;
}
resetParallel = function() {
parallel().drop();
}
doParallel = function( work ) {
resetParallel();
startMongoProgramNoConnect( "mongo", "--port", ports[ 1 ], "--eval", work + "; db.parallelStatus.save( {done:1} );", baseName );
}
doneParallel = function() {
return !!parallel().findOne();
}
waitParallel = function() {
assert.soon( function() { return doneParallel(); }, "parallel did not finish in time", 300000, 1000 );
}
cloneNo = -1;
startstartclone = function( spec ) {
spec = spec || "";
cloneNo++;
doParallel( "z = db.runCommand( {startCloneCollection:\"jstests_clonecollection.a\", from:\"localhost:" + ports[ 0 ] + "\"" + spec + " } ); print( \"clone_clone_clone_commandResult::" + cloneNo + "::\" + tojson( z , '' , true ) + \":::::\" );" );
}
finishstartclone = function() {
waitParallel();
// even after parallel shell finished, must wait for finishToken line to appear in log
assert.soon( function() {
raw = rawMongoProgramOutput().replace( /[\r\n]/gm , " " )
ret = raw.match( new RegExp( "clone_clone_clone_commandResult::" + cloneNo + "::(.*):::::" ) );
if ( ret == null ) {
return false;
}
ret = ret[ 1 ];
return true;
} );
eval( "ret = " + ret );
assert.commandWorked( ret );
return ret;
}
dofinishclonecmd = function( ret ) {
finishToken = ret.finishToken;
// Round-tripping through JS can corrupt the cursor ids we store as BSON
// Date elements. Date( 0 ) will correspond to a cursorId value of 0, which
// makes the db start scanning from the beginning of the collection.
finishToken.cursorId = new Date( 0 );
return t.runCommand( {finishCloneCollection:finishToken} );
}
finishclone = function( ret ) {
assert.commandWorked( dofinishclonecmd( ret ) );
}
ports = allocatePorts( 2 );
f = startMongod( "--port", ports[ 0 ], "--dbpath", "/data/db/" + baseName + "_from", "--nohttpinterface", "--bind_ip", "127.0.0.1" ).getDB( baseName );
t = startMongod( "--port", ports[ 1 ], "--dbpath", "/data/db/" + baseName + "_to", "--nohttpinterface", "--bind_ip", "127.0.0.1" ).getDB( baseName );
for( i = 0; i < 1000; ++i ) {
f.a.save( { i: i } );
}
assert.eq( 1000, f.a.find().count() , "A1" );
assert.commandWorked( t.cloneCollection( "localhost:" + ports[ 0 ], "a" ) );
assert.eq( 1000, t.a.find().count() , "A2" );
t.a.drop();
assert.commandWorked( t.cloneCollection( "localhost:" + ports[ 0 ], "a", { i: { $gte: 10, $lt: 20 } } ) );
assert.eq( 10, t.a.find().count() , "A3" );
t.a.drop();
assert.eq( 0, t.system.indexes.find().count() , "prep 2");
f.a.ensureIndex( { i: 1 } );
assert.eq( 2, f.system.indexes.find().count(), "expected index missing" );
assert.commandWorked( t.cloneCollection( "localhost:" + ports[ 0 ], "a" ) );
if ( t.system.indexes.find().count() != 2 ) {
printjson( t.system.indexes.find().toArray() );
}
assert.eq( 2, t.system.indexes.find().count(), "expected index missing" );
// Verify index works
x = t.a.find( { i: 50 } ).hint( { i: 1 } ).explain()
printjson( x )
assert.eq( 50, x.indexBounds.i[0][0] , "verify 1" );
assert.eq( 1, t.a.find( { i: 50 } ).hint( { i: 1 } ).toArray().length, "match length did not match expected" );
// Check that capped-ness is preserved on clone
f.a.drop();
t.a.drop();
f.createCollection( "a", {capped:true,size:1000} );
assert( f.a.isCapped() );
assert.commandWorked( t.cloneCollection( "localhost:" + ports[ 0 ], "a" ) );
assert( t.a.isCapped(), "cloned collection not capped" );
// Now test insert + delete + update during clone
f.a.drop();
t.a.drop();
for( i = 0; i < 100000; ++i ) {
f.a.save( { i: i } );
}
assert.eq( 100000, f.a.count() );
startstartclone( ", query:{i:{$gte:0}}" );
sleep( 200 );
f.a.save( { i: 200000 } );
f.a.save( { i: -1 } );
f.a.remove( { i: 0 } );
f.a.update( { i: 99998 }, { i: 99998, x: "y" } );
assert.eq( 100001, f.a.count() );
ret = finishstartclone();
finishclone( ret );
assert.eq( 100000, t.a.find().count() , "D1" );
assert.eq( 1, t.a.find( { i: 200000 } ).count() , "D2" );
assert.eq( 0, t.a.find( { i: -1 } ).count() , "D3" );
assert.eq( 0, t.a.find( { i: 0 } ).count() , "D4" );
assert.eq( 1, t.a.find( { i: 99998, x: "y" } ).count() , "D5" );
// Now test oplog running out of space -- specify small size clone oplog for test.
f.a.drop();
t.a.drop();
for( i = 0; i < 200000; ++i ) {
f.a.save( { i: i } );
}
assert.eq( 200000, f.a.count() , "E1" );
startstartclone( ", logSizeMb:1" );
ret = finishstartclone();
for( i = 200000; i < 250000; ++i ) {
f.a.save( { i: i } );
}
assert.eq( 250000, f.a.count() );
assert.commandFailed( dofinishclonecmd( ret ) );
// Make sure the same works with standard size op log.
f.a.drop();
t.a.drop();
for( i = 0; i < 200000; ++i ) {
f.a.save( { i: i } );
}
assert.eq( 200000, f.a.count() , "F1" );
startstartclone();
ret = finishstartclone();
for( i = 200000; i < 250000; ++i ) {
f.a.save( { i: i } );
}
assert.eq( 250000, f.a.count() , "F2" );
finishclone( ret );
assert.eq( 250000, t.a.find().count() , "F3" );
// Test startCloneCollection and finishCloneCollection commands.
f.a.drop();
t.a.drop();
for( i = 0; i < 100000; ++i ) {
f.a.save( { i: i } );
}
assert.eq( 100000, f.a.count() , "G1" );
startstartclone();
sleep( 200 );
f.a.save( { i: -1 } );
assert.eq( 100001, f.a.count() );
ret = finishstartclone();
assert.eq( 100001, t.a.find().count() , "G2" );
f.a.save( { i: -2 } );
assert.eq( 100002, f.a.find().count() , "G3" );
finishclone( ret );
assert.eq( 100002, t.a.find().count() , "G4" );
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