/// <exception cref="System.IO.IOException"/>
protected internal override void StartStorage()
{
Options options = new Options();
Path dbPath = new Path(GetConfig().Get(YarnConfiguration.TimelineServiceLeveldbStateStorePath
), DbName);
FileSystem localFS = null;
try
{
localFS = FileSystem.GetLocal(GetConfig());
if (!localFS.Exists(dbPath))
{
if (!localFS.Mkdirs(dbPath))
{
throw new IOException("Couldn't create directory for leveldb " + "timeline store "
+ dbPath);
}
localFS.SetPermission(dbPath, LeveldbDirUmask);
}
}
finally
{
IOUtils.Cleanup(Log, localFS);
}
JniDBFactory factory = new JniDBFactory();
try
{
options.CreateIfMissing(false);
db = factory.Open(new FilePath(dbPath.ToString()), options);
Log.Info("Loading the existing database at th path: " + dbPath.ToString());
CheckVersion();
}
catch (NativeDB.DBException e)
{
if (e.IsNotFound() || e.Message.Contains(" does not exist "))
{
try
{
options.CreateIfMissing(true);
db = factory.Open(new FilePath(dbPath.ToString()), options);
Log.Info("Creating a new database at th path: " + dbPath.ToString());
StoreVersion(CurrentVersionInfo);
}
catch (DBException ex)
{
throw new IOException(ex);
}
}
else
{
throw new IOException(e);
}
}
catch (DBException e)
{
throw new IOException(e);
}
}