Can journaling feature be used to perform safe hot backups?

1

---

Will there be journal replay programs in case of incomplete entries (if there is a failure in the middle of one)?

1

---

What is a ‘namespace’?

1

---

Are null values allowed?

1

---

How does sharding work with replication?

1

---

When using replication, can some members use journaling and others not?

1

---

If a ‘movechunk’ fails, is it necessary to cleanup the partially moved docs?

1

---

What is a master or primary?

1

---

When an object attribute is removed, is it deleted from the store?

1

---

How do I do transactions/locking?

1

---

Should you start out with sharded or with a non-sharded mongodb environment?

1

---

What happens when a shard is down or slow when querying?

1

---

Does aws have mongodb?

1

---

Is dynamodb a mongodb?

1

---

Is mongodb big data?

1

---