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/**
* Test that old journal files are eventually deleted.
*/
if (db.serverBuildInfo().bits == 32) {
print("skip on 32 bit systems");
} else {
var conn = MongoRunner.runMongod({
journal: "",
smallfiles: "",
syncdelay: 5, // seconds between fsyncs.
});
db = conn.getDB("test");
// listFiles can return Access Denied on Windows if the file
// is deleted at the same time as listFiles is run, in this
// case we sleep and retry.
function listFilesRetry(path) {
for (var i = 0; i < 5; ++i) {
try {
return listFiles(path);
} catch (e) {
print("Exception during listFiles: " + e);
// Sleep for 10 milliseconds
sleep(10);
}
}
throw new Error("listFilesRetry failed");
}
// Returns true if j._0 exists.
function firstJournalFileExists() {
var files = listFilesRetry(conn.dbpath + "/journal");
for (var i = 0; i < files.length; i++) {
if (files[i].baseName === "j._0") {
return true;
}
}
return false;
}
// Represents the cummulative total of the number of journal files created.
function getLatestJournalFileNum() {
var files = listFilesRetry(conn.dbpath + "/journal");
var latest = 0;
files.forEach(function(file) {
if (file.baseName !== "lsn") {
var fileNum = NumberInt(file.baseName[file.baseName.length - 1]);
latest = Math.max(latest, fileNum);
}
});
return latest;
}
var stringSize = 1024 * 1024;
var longString = new Array(stringSize).join("x");
// Insert some data to create the first journal file.
var numInserted = 0;
while (numInserted < 100) {
db.foo.insert({_id: numInserted++, s: longString});
}
assert.soon(firstJournalFileExists, "Should have created a journal file");
// Do writes until the first journal file is deleted, or we give up waiting.
var maxJournalFiles = 10;
while (firstJournalFileExists() && getLatestJournalFileNum() < maxJournalFiles) {
db.foo.insert({_id: numInserted++, s: longString});
if (numInserted % 100 == 0) {
jsTestLog("numInserted: " + numInserted);
db.adminCommand({fsync: 1});
db.foo.remove({});
db.adminCommand({fsync: 1});
gc();
}
}
assert(!firstJournalFileExists(), "Expected to have deleted the first journal file by now");
MongoRunner.stopMongod(conn);
}
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