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move_table_copy needs the lock that was set previously in del_table_copy.
This doesn't work on old nodes, so bump protocol version and check it.
Remove old protocol conversion code, which have been around since OTP-R15.
Checking if lock is needed requires rpc communication via mnesia_gvar
ets table to be backwards compatible.
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This reverts commit baad9722c84ecb41d2278ac9912d30e42c3b4409.
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* dgud/mnesia/try-catch:
mnesia: Replace catch with try-catch
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Avoids building stacktraces where it is not needed and do
not mask errors, i.e. only catch the relevant classes in each try.
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* richcarl/dcd-dumps:
Make Mnesia DCD dump behaviour available via API
Make Mnesia DCD dump behaviour available via configuration
OTP-12481
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Setting the new Mnesia parameter 'dump_disc_copies_at_startup' to
'false' will completely disable the DCD dumping while tables are being
loaded. If it is set to 'true' (the default), the same test will now
be performed as for normal dumps, i.e., using the 'dc_dump_limit'
parameter. Previously, the test performed at load time was different
from the one used at runtime, and caused a lot of unnecessary dumping
which slowed down the startup.
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If mnesia:cleartable/1 was called during a table_load an schema event
with delete and write of that table is sent, which caused the table
to contain the schema record instead of clearing the table.
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Returns the same value for `mnesia_loader:disc_load_table/2' as
`mnesia_loader:net_load_table/4' if a table copy can not be found.
This patch was stuck as a pull request in GitHub (authored by Uwe
Dauernheim):
https://github.com/erlang/otp/pull/16
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create_table
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And remove old protocol version hacks
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This commit is a preparation for introducing location information
(filename/line number) in stacktraces in exceptions. Currently
a stack trace looks like:
[{Mod1,Function1,Arity1},
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{ModN,FunctionN,ArityN}]
Add a forth element to each tuple that can be used indication
the filename and line number of the source file:
[{Mod1,Function1,Arity1,Location1},
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{ModN,FunctionN,ArityN,LocationN}]
In this commit, the fourth element will just be an empty list,
and we will change all code that look at or manipulate stacktraces.
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Since the table loader also sets (table) write locks, a special
lock type, 'load', was needed. Unfortunately, this affects mnesia
activity callbacks that redefine the lock operation.
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* is/mnesia-send-compressed:
Add option to compress data when copying tables between Mnesia nodes
OTP-8406 Igor Ribeiro Sucupira added the option to compress data when
copying tables between Mnesia nodes.
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Optionally using data compression for copying Mnesia tables allows
the system to be tuned to eliminate network bottlenecks from
deployments where enough CPU is available to use zlib.
With this patch, running erl -mnesia send_compressed <level>
will enable compression for sending tables between nodes. The
compression level can be any integer in [0, 9], with 0 (the
default) meaning no compression (exactly the previous behaviour)
and 9 being the highest compression level.
To set any non-zero compression level at the sender, both nodes
must have the updated Mnesia modules (the receiver will work
according to the sender's configuration).
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