Report that channel is not connected if the socket is closed.
New test case to understand issue #2582
Fixed issue #2582 about distributed addEdge for regular edges
Minor: pre-allocated 2k of stream for serialization
Fixed issue ETL #1 (https://github.com/orientechnologies/orientdb-etl/issues/1)
OOM is thrown if memory is not allocated.
Merge remote-tracking branch 'origin/1.7.8' into 1.7.8
Fixed issue #2582
Read lock is release if socket is closed.
Merge remote-tracking branch 'origin/1.7.8' into 1.7.8
implemented script for backup database with full freeze and lvm support
Fixed issue #2659
Nothing compression avoid to copy bytes if not needed
Console: fixed returning of result in case of error
fixed backup.sh for support plocal and remote lvm
Merge pull request #2662 from rtc-draper/fixsock

Report that channel is not connected if the socket is closed.
Improved db import speed
Reused a cluster on class creation, if present
Graph: new exception if vertex class is null
Fixed issue #2657 (Can't escape characters inside an IN condition)