I think I've tracked down the problem. I've been using the following
directory structure for my databases:
/Users/me/projects/<uuid>/db
where the <uuid> is different for each database. Orientdb seems to take the
last part of the path (db) as the unique identifier for the database. So,
even though I have 4 distinct directories with 4 different databases,
orient only sees and uses the last one.
If I run this first test program:
import java.util.LinkedList;
import java.util.List;
import com.tinkerpop.blueprints.Vertex;
import com.tinkerpop.blueprints.impls.orient.OrientBaseGraph;
import com.tinkerpop.blueprints.impls.orient.OrientGraph;
import com.tinkerpop.blueprints.impls.orient.OrientGraphFactory;
import com.tinkerpop.blueprints.impls.orient.OrientGraphNoTx;
public class OrientTest {
static class Writer implements Runnable {
Writer(String url, OrientGraphFactory oGF) {
this.url = url;
this.oGF = oGF;
}
public void run() {
OrientGraphNoTx oG = oGF.getNoTx();
oG.setThreadMode(OrientBaseGraph.THREAD_MODE.ALWAYS_AUTOSET);
oG.addVertex(null, "url", url);
oG.shutdown();
}
private final String url;
private final OrientGraphFactory oGF;
}
static class Reader implements Runnable {
Reader(String url, OrientGraphFactory oGF) {
this.url = url;
this.oGF = oGF;
}
public void run() {
OrientGraph oG = oGF.getTx();
oG.setThreadMode(OrientBaseGraph.THREAD_MODE.ALWAYS_AUTOSET);
Iterable<Vertex> vertices =
oG.query().has("url",oG.getRawGraph().getURL()).vertices();
assert(vertices.iterator().hasNext());
for (Vertex next : vertices) {
System.out.format("vertex : %s url:%s%n", next,
next.getProperty("url"));
}
oG.shutdown();
}
private final String url;
private final OrientGraphFactory oGF;
}
public static void main(String[] args) throws InterruptedException {
List<OrientGraphNoTx> oGS = new LinkedList<>();
Thread[] writers = new Thread[10];
for (int i = 0; i<4; i++) {
String url = "plocal:/Users/curtis/orientdb/" + uuids[i] + "/db";
OrientGraphFactory oGF = new OrientGraphFactory(url);
writers[i] = new Thread(new Writer(url, oGF));
writers[i].start();
}
for (int i=0; i<4; i++) writers[i].join();
for (int i = 0; i<4; i++) {
String url = "plocal:/Users/curtis/orientdb/" + uuids[i] + "/db";
OrientGraphFactory oGF = new OrientGraphFactory(url);
new Thread(new Reader(url, oGF)).start();
}
}
private static String[] uuids = {
"91c032a0-5b36-4ebf-bd0f-f0b1fd14cd56",
"258d6da8-a3cc-4e17-91ec-48449876b78a",
"2873e704-588b-4e05-bac9-4bdded9f2bfa",
"bd1b381a-69ff-4dfa-86fe-70212594a1a2"
};
// private static String[] uuids = {
// "dir0",
// "dir1",
// "dir2",
// "dir3"
// };
}
I get these errors:
Exception in thread "Thread-2" Exception in thread "Thread-1" Exception in
thread "Thread-0"
com.orientechnologies.orient.core.exception.ODatabaseException: Cannot
create database
at
com.orientechnologies.orient.core.db.record.ODatabaseRecordAbstract.create(ODatabaseRecordAbstract.java:396)
at
com.orientechnologies.orient.core.db.ODatabaseWrapperAbstract.create(ODatabaseWrapperAbstract.java:55)
at
com.orientechnologies.orient.core.db.ODatabaseRecordWrapperAbstract.create(ODatabaseRecordWrapperAbstract.java:64)
at
com.tinkerpop.blueprints.impls.orient.OrientGraphFactory.getDatabase(OrientGraphFactory.java:137)
at
com.tinkerpop.blueprints.impls.orient.OrientGraphFactory.getDatabase(OrientGraphFactory.java:118)
at
com.tinkerpop.blueprints.impls.orient.OrientGraphFactory.getNoTx(OrientGraphFactory.java:101)
at OrientTest$Writer.run(OrientTest.java:23)
at java.lang.Thread.run(Thread.java:745)
Caused by: com.orientechnologies.orient.core.exception.ODatabaseException:
Cannot create database
at
com.orientechnologies.orient.core.db.raw.ODatabaseRaw.create(ODatabaseRaw.java:143)
at
com.orientechnologies.orient.core.db.ODatabaseWrapperAbstract.create(ODatabaseWrapperAbstract.java:55)
at
com.orientechnologies.orient.core.db.record.ODatabaseRecordAbstract.create(ODatabaseRecordAbstract.java:350)
... 7 more
Caused by: com.orientechnologies.orient.core.exception.OStorageException:
Cannot create new storage 'db' because it is not closed
at
com.orientechnologies.orient.core.storage.impl.local.paginated.OLocalPaginatedStorage.create(OLocalPaginatedStorage.java:282)
at
com.orientechnologies.orient.core.db.raw.ODatabaseRaw.create(ODatabaseRaw.java:139)
... 9 more
com.orientechnologies.orient.core.exception.ODatabaseException: Cannot
create database
at
com.orientechnologies.orient.core.db.record.ODatabaseRecordAbstract.create(ODatabaseRecordAbstract.java:396)
at
com.orientechnologies.orient.core.db.ODatabaseWrapperAbstract.create(ODatabaseWrapperAbstract.java:55)
at
com.orientechnologies.orient.core.db.ODatabaseRecordWrapperAbstract.create(ODatabaseRecordWrapperAbstract.java:64)
at
com.tinkerpop.blueprints.impls.orient.OrientGraphFactory.getDatabase(OrientGraphFactory.java:137)
at
com.tinkerpop.blueprints.impls.orient.OrientGraphFactory.getDatabase(OrientGraphFactory.java:118)
at
com.tinkerpop.blueprints.impls.orient.OrientGraphFactory.getNoTx(OrientGraphFactory.java:101)
at OrientTest$Writer.run(OrientTest.java:23)
at java.lang.Thread.run(Thread.java:745)
Caused by: com.orientechnologies.orient.core.exception.ODatabaseException:
Cannot create database
at
com.orientechnologies.orient.core.db.raw.ODatabaseRaw.create(ODatabaseRaw.java:143)
at
com.orientechnologies.orient.core.db.ODatabaseWrapperAbstract.create(ODatabaseWrapperAbstract.java:55)
at
com.orientechnologies.orient.core.db.record.ODatabaseRecordAbstract.create(ODatabaseRecordAbstract.java:350)
... 7 more
Caused by: com.orientechnologies.orient.core.exception.OStorageException:
Cannot create new storage 'db' because it is not closed
at
com.orientechnologies.orient.core.storage.impl.local.paginated.OLocalPaginatedStorage.create(OLocalPaginatedStorage.java:282)
at
com.orientechnologies.orient.core.db.raw.ODatabaseRaw.create(ODatabaseRaw.java:139)
... 9 more
com.orientechnologies.orient.core.exception.ODatabaseException: Cannot
create database
at
com.orientechnologies.orient.core.db.record.ODatabaseRecordAbstract.create(ODatabaseRecordAbstract.java:396)
at
com.orientechnologies.orient.core.db.ODatabaseWrapperAbstract.create(ODatabaseWrapperAbstract.java:55)
at
com.orientechnologies.orient.core.db.ODatabaseRecordWrapperAbstract.create(ODatabaseRecordWrapperAbstract.java:64)
at
com.tinkerpop.blueprints.impls.orient.OrientGraphFactory.getDatabase(OrientGraphFactory.java:137)
at
com.tinkerpop.blueprints.impls.orient.OrientGraphFactory.getDatabase(OrientGraphFactory.java:118)
at
com.tinkerpop.blueprints.impls.orient.OrientGraphFactory.getNoTx(OrientGraphFactory.java:101)
at OrientTest$Writer.run(OrientTest.java:23)
at java.lang.Thread.run(Thread.java:745)
Caused by: com.orientechnologies.orient.core.exception.ODatabaseException:
Cannot create database
at
com.orientechnologies.orient.core.db.raw.ODatabaseRaw.create(ODatabaseRaw.java:143)
at
com.orientechnologies.orient.core.db.ODatabaseWrapperAbstract.create(ODatabaseWrapperAbstract.java:55)
at
com.orientechnologies.orient.core.db.record.ODatabaseRecordAbstract.create(ODatabaseRecordAbstract.java:350)
... 7 more
Caused by: com.orientechnologies.orient.core.exception.OStorageException:
Cannot create new storage 'db' because it is not closed
at
com.orientechnologies.orient.core.storage.impl.local.paginated.OLocalPaginatedStorage.create(OLocalPaginatedStorage.java:282)
at
com.orientechnologies.orient.core.db.raw.ODatabaseRaw.create(ODatabaseRaw.java:139)
... 9 more
vertex : v[#9:0]
url:plocal:/Users/curtis/orientdb/bd1b381a-69ff-4dfa-86fe-70212594a1a2/db
Disconnected from the target VM, address: '127.0.0.1:56993', transport:
'socket'
However, if I remove the + "/db"; from the url lines, it works and I get:
Connected to the target VM, address: '127.0.0.1:57066', transport: 'socket'
vertex : v[#9:0]
url:plocal:/Users/curtis/orientdb/258d6da8-a3cc-4e17-91ec-48449876b78a
vertex : v[#9:0]
url:plocal:/Users/curtis/orientdb/bd1b381a-69ff-4dfa-86fe-70212594a1a2
vertex : v[#9:0]
url:plocal:/Users/curtis/orientdb/91c032a0-5b36-4ebf-bd0f-f0b1fd14cd56
vertex : v[#9:0]
url:plocal:/Users/curtis/orientdb/2873e704-588b-4e05-bac9-4bdded9f2bfa
Disconnected from the target VM, address: '127.0.0.1:57066', transport:
'socket'
Seems like a bug to me...
Curtis
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