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If the last storage node gets disconnected, an operation failure will
occur, so there is no risk of sending AnswerTransactionFinished to client
if some object was not stored.

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onStoreTimeout is called by poll thread, which causes a new local_var to be
implicitly created with a new queue (specific to poll thread, which isn't
supposed to have one).
To know the queue that should receive AnswerHasLock, reuse the one
registered to dispatcher to receive AnswerStoreObject.

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Make it optional, to suit "ping" use, but check that it's always passed
except in that special case.

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This fixes cases where a thread is expecting some answer from queue, and
a packet gets forgotten, as it would block until next expected packet
arrives (if there is no next packet, it will wait forever).

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- Merge sys.exit()
- Remove exit message
- Move out of loop the code that should run once
- Add an XXX

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This check was always false in the case of a client.
Move the 'node is None' condition in the potential scope.

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Keep lock around _initNodeConnection() in connection pool to avoid concurrent
connections to the same storage node.

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- Drop it from app
- Don't split packets as 10000 entries is beyond NEO expectations.
- Iterate over used nodes only (instead of filtering)

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- Remove connector option (not available in master, storage or admin)
- Use '-c' to specify the cluster name

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- Unify log methods among classes.
- Define log() on event manager

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SendPartitionTable packet was sent between Ask and Answer PartitionTable
packets, as notifications. In this case, the only purpose of the 'Answer'
was to check that the partition table was filled. The 'Ask' allowed also
to request a part of the partitions but was not used and redundant with
AskPartitionList for neoctl.

This commit include the following work:
- The partition table is always send in one packet.
- The full partition table is always requested with AskPartitionTable
- The full partition table is notified with SendPartitionTable
- Client node process the answer in the bootstrap handler.
- Admin can receive answer *and* notifications for the partition table.
- Move the log calls to the pt.py module
- Add pt.getRowList() to factorise the code.
- Build partition table packets out of the loop when possible
- Always load inconditionnaly the partition table in generic pt.py
-

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