Commit Graph

20297 Commits

Author SHA1 Message Date
Botond Dénes
cf24f4fe30 imr: move documentation to docs/
Where all the other documentation is, and hence where people would be
looking for it.

Signed-off-by: Botond Dénes <bdenes@scylladb.com>
Message-Id: <20191128144612.378244-1-bdenes@scylladb.com>
2019-11-28 16:47:52 +02:00
Avi Kivity
36dd0140a8 Update seastar submodule
* seastar 5c25de907a...8eb6a67a4b (1):
  > util/backtrace.hh: add missing print.hh include
2019-11-28 16:47:16 +02:00
Benny Halevy
7aef39e400 tracing: one_session_records: keep local tracing ptr
Similar to trace_state keep shared_ptr<tracing> _local_tracing_ptr
in one_session_records when constructed so it can be used
during shutdown.

Fixes #5243

Signed-off-by: Benny Halevy <bhalevy@scylladb.com>
2019-11-28 15:24:10 +01:00
Gleb Natapov
75499896ab client_state: store _user as optional instead of shared_ptr
_user cannot outlive client_state class instance, so there is no point
in holding it in shared_ptr.

Tested: debug test.py and dtest auth_test.py

Message-Id: <20191128131217.26294-5-gleb@scylladb.com>
2019-11-28 15:48:59 +02:00
Gleb Natapov
1538cea043 cql: modification_statement: store _restrictions as optional instead of shared_ptr
_restrictions can be optional since its lifetime is managed by
modification_statement class explicitly.

Message-Id: <20191128131217.26294-4-gleb@scylladb.com>
2019-11-28 15:48:54 +02:00
Gleb Natapov
ce5d6d5eee storage_service: store thrift server as an optional instead of shared_ptr
Only do_stop_rpc_server uses the shared_ptr to prolong server's
lifetime until stop() completes, but do_with() can be used to achieve the
same.

Message-Id: <20191128131217.26294-3-gleb@scylladb.com>
2019-11-28 15:48:51 +02:00
Gleb Natapov
b9b99431a8 storage_service: store cql server as an optional instead of shared_ptr
Only do_stop_native_transport() uses the shared_ptr to prolong server's
lifetime until stop() completes, but do_with() can be used to achieve the
same.

Message-Id: <20191128131217.26294-2-gleb@scylladb.com>
2019-11-28 15:48:47 +02:00
Avi Kivity
2b7e97514a Update seastar submodule
* seastar 6f0ef32514...5c25de907a (7):
  > shared_future: Fix crash when all returned futures time out
Fixes #5322.
  > future: don't create temporaries on get_value().
  > reactor: lower the default stall threshold to 200ms
  > reactor: Simplify network initialization
  > reactor: Replace most std::function with noncopyable_function
  > futures: Avoid extra moves in SEASTAR_TYPE_ERASE_MORE mode
  > inet_address: Make inet_address == operator ignore scope (again)
2019-11-28 14:48:01 +02:00
Nadav Har'El
fde336a882 Merged "5139 minmax bad printing"
Merged pull request https://github.com/scylladb/scylla/pull/5311 from
Juliusz Stasiewicz:

This is a partial solution to #5139 (only for two types) because of the
above and because collections are much harder to do. They are coming in
a separate PR.
2019-11-28 14:06:43 +02:00
Juliusz Stasiewicz
3b9ebca269 tests/cql_query_test: add test for aggregates on inet+time_type
This is a test to max(), min() and count() system functions on
the arguments of types: `net::inet_address` and `time_native_type`.
2019-11-28 11:20:43 +01:00
Juliusz Stasiewicz
9c23d89531 cql3/functions: add missing min/max/count for inet and time type
References #5139. Aggregate functions, like max(), when invoked
on `inet_address' and `time_native_type' used to choose
max(blob)->blob overload, with casting of argument and result to
bytes. This is because appropriate calls to
`aggregate_fcts::make_XXX_function()' were missing. This commit
adds them. Functioning remains the same but now clients see
user-friendly representations of aggregate result, not binary.

Comparing inet addresses without inet::operator< is performed by
trick, where ADL is bypassed by wrapping the name of std::min/max
and providing an overload of wrapper on inet type.
2019-11-28 11:18:31 +01:00
Pavel Emelyanov
8532093c61 cql: The cql_server does not need proxy reference
Signed-off-by: Pavel Emelyanov <xemul@scylladb.com>
Message-Id: <20191127153842.4098-1-xemul@scylladb.com>
2019-11-28 10:58:46 +01:00
Amos Kong
d4a26f2ad0 scylla_util: get_scylla_dirs: return default data/commitlog directories if they aren't set (#5358)
The default values of data_file_directories and commitlog_directory were
commented by commit e0f40ed16a. It causes scylla_util.py:get_scylla_dirs() to
fail in checking the values.

This patch changed get_scylla_dirs() to return default data/commitlog
directories if they aren't set.

Fixes #5358 

Reviewed-by: Pavel Emelyanov <xemul@scylladb.com>
Signed-off-by: Amos Kong <amos@scylladb.com>
2019-11-27 13:52:05 +02:00
Nadav Har'El
cb1ed5eab2 alternator-test: test Query's Limit parameter
Add a test, test_query.py::test_query_limit, to verify that the Limit
parameter correctly limits the number of rows returned by the Query.
This was supposed to already work correctly - but we never had a test for
it. As we hoped, the test passes (on both Alternator and DynamoDB).

Another test, test_query.py::test_query_limit_paging, verifies that
paging can be done with any setting of Limit. We already had tests
for paging of the Scan operation, but not for the Query operation.

Refs #5153

Signed-off-by: Nadav Har'El <nyh@scylladb.com>
2019-11-27 12:27:26 +01:00
Nadav Har'El
c01ca661a0 alternator-test: Select parameter of Query and Scan
This is a comprehensive test for the "Select" parameter of Query and Scan
operations, but only for the base-table case, not index, so another future
patch should add similar tests in test_gsi.py and test_lsi.py as well.

The main use of the Select parameter is to allow returning just the count
of items, instead of their content, but it also has other esoteric options,
all of which we test here.

The test currently succeeds on AWS DynamoDB, demonstrating that the test
is correct, but fails on Alternator because the "Select" parameter is not
yet supported. So the test is marked xfail.

Refs #5058

Signed-off-by: Nadav Har'El <nyh@scylladb.com>
2019-11-27 12:22:33 +01:00
Botond Dénes
9d09f57ba5 scylla-gdb.py: scylla_smp_queues: use lazy initalization
Currently the command tries to read all seastar smp queues in its
initialization code in the constructor. This constructor is run each
time `scylla-gdb.py` is sourced in `gdb` which leads to slowdowns and
sometimes also annoying errors because the sourcing happens in the wrong
context and seastar symbols are not available.
Avoid this by running this initializing code lazily, on the first
invocation.

Signed-off-by: Botond Dénes <bdenes@scylladb.com>
Message-Id: <20191127095408.112101-1-bdenes@scylladb.com>
2019-11-27 12:04:57 +01:00
Tomasz Grabiec
87b72dad3e Merge "treewide: add missing const qualifiers" from Pavel Solodovnikov
This patchset adds missing "const" function qualifiers throughout
the Scylla code base, which would make code less error-prone.

The changeset incorporates Kostja's work regarding const qualifiers
in the cql code hierarchy along with a follow-up patch addressing the
review comment of the corresponding patch set (the patch subject is
"cql: propagate const property through prepared statement tree.").
2019-11-27 10:56:20 +01:00
Rafael Ávila de Espíndola
91b43f1f06 dbuild: fix podman with selinux enabled
With this change I am able to run tests using docker-podman. The
option also exists in docker.

Signed-off-by: Rafael Ávila de Espíndola <espindola@scylladb.com>
Message-Id: <20191126194101.25221-1-espindola@scylladb.com>
2019-11-26 21:50:56 +02:00
Rafael Ávila de Espíndola
480055d3b5 dbuild: Fix missing docker options
With the recent changes docker was missing a few options. In
particular, it was missing -u.

Signed-off-by: Rafael Ávila de Espíndola <espindola@scylladb.com>
Message-Id: <20191126194347.25699-1-espindola@scylladb.com>
2019-11-26 21:45:31 +02:00
Rafael Ávila de Espíndola
c0a2cd70ff lua: fix test with boost 1.66
The boost 1.67 release notes says

Changed maximum supported year from 10000 to 9999 to resolve various issues

So change the test to use a larger number so that we get an exception
with both boost 1.66 and boost 1.67.

Fixes #5344

Signed-off-by: Rafael Ávila de Espíndola <espindola@scylladb.com>
Message-Id: <20191126180327.93545-1-espindola@scylladb.com>
2019-11-26 21:17:15 +02:00
Pavel Solodovnikov
55a1d46133 cql: some more missing const qualifiers
There are several virtual functions in public interfaces named "is_*"
that clearly should be marked as "const", so fix that.
2019-11-26 17:57:51 +03:00
Pavel Solodovnikov
412f1f946a cql: remove "mutable" on _opts in select_statement
_opts initialization can be safely done in the constructor, hence no need to make it mutable.
2019-11-26 17:55:10 +03:00
Piotr Sarna
d90dbd6ab0 Merge "support podman as a replacement to docker" from Avi
Docker on Fedora 31 is flakey, and is not supported at all on RHEL 8.
Podman is a drop-in replacement for docker; this series adds support
for using podman in dbuild.

Apart from actually working on Fedora 31 hosts,
podman is nicer in being more secure and not requiring a daemon.

Fixes #5332
2019-11-26 15:17:49 +01:00
Tomasz Grabiec
5c9fe83615 Merge "Sanitize sub-modules shutting down" from Pavel
As suggested in issue #4586 here is the helper that prints
"shutting down foo" message, then shuts the foo down, then
prints the "[it] was successull" one. In between it catches
the exception (if any) and warns this in logs.

By "then" I mean literally then, not the seastar's then() :)

Fixes: #4586
2019-11-26 15:14:22 +02:00
Piotr Sarna
9c5a5a5ac2 treewide: add names to semaphores
By default, semaphore exceptions bring along very little context:
either that a semaphore was broken or that it timed out.
In order to make debugging easier without introducing significant
runtime costs, a notion of named semaphore is added.
A named semaphore is simply a semaphore with statically defined
name, which is present in its errors, bringing valuable context.
A semaphore defined as:

  auto sem = semaphore(0);

will present the following message when it breaks:
"Semaphore broken"
However, a named semaphore:

  auto named_sem = named_semaphore(0, named_semaphore_exception_factory{"io_concurrency_sem"});

will present a message with at least some debugging context:

  "Semaphore broken: io_concurrency_sem"

It's not much, but it would really help in pinpointing bugs
without having to inspect core dumps.

At the same time, it does not incur any costs for normal
semaphore operations (except for its creation), but instead
only uses more CPU in case an error is actually thrown,
which is considered rare and not to be on the hot path.

Refs #4999

Tests: unit(dev), manual: hardcoding a failure in view building code
2019-11-26 15:14:21 +02:00
Avi Kivity
6fbb724140 conf: remove unsupported options from scylla.yaml (#5299)
These unsupported options do nothing except to confuse users who
try to tune them.

Options removed:

hinted_handoff_throttle_in_kb
max_hints_delivery_threads
batchlog_replay_throttle_in_kb
key_cache_size_in_mb
key_cache_save_period
key_cache_keys_to_save
row_cache_size_in_mb
row_cache_save_period
row_cache_keys_to_save
counter_cache_size_in_mb
counter_cache_save_period
counter_cache_keys_to_save
memory_allocator
saved_caches_directory
concurrent_reads
concurrent_writes
concurrent_counter_writes
file_cache_size_in_mb
index_summary_capacity_in_mb
index_summary_resize_interval_in_minutes
trickle_fsync
trickle_fsync_interval_in_kb
internode_authenticator
native_transport_max_threads
native_transport_max_concurrent_connections
native_transport_max_concurrent_connections_per_ip
rpc_server_type
rpc_min_threads
rpc_max_threads
rpc_send_buff_size_in_bytes
rpc_recv_buff_size_in_bytes
internode_send_buff_size_in_bytes
internode_recv_buff_size_in_bytes
thrift_framed_transport_size_in_mb
concurrent_compactors
compaction_throughput_mb_per_sec
sstable_preemptive_open_interval_in_mb
inter_dc_stream_throughput_outbound_megabits_per_sec
cross_node_timeout
streaming_socket_timeout_in_ms
dynamic_snitch_update_interval_in_ms
dynamic_snitch_reset_interval_in_ms
dynamic_snitch_badness_threshold
request_scheduler
request_scheduler_options
throttle_limit
default_weight
weights
request_scheduler_id
2019-11-26 15:14:21 +02:00
Amos Kong
817f34d1a9 ami: support new aws instance types: c5d, m5d, m5ad, r5d, z1d (#5330)
Currently scylla_io_setup will skip in scylla_setup, because we didn't support
those new instance types.

I manually executed scylla_io_setup, and the scylla-server started and worked
well.

Let's apply this patch first, then check if there is some new problem in
ami-test.

Signed-off-by: Amos Kong <amos@scylladb.com>
2019-11-26 15:14:21 +02:00
Konstantin Osipov
90346236ac cql: propagate const property through prepared statement tree.
cql_statement is a class representing a prepared statement in Scylla.
It is used concurrently during execution, so it is important that its
change is not changed by execution.

Add const qualifier to the execution methods family, throghout the
cql hierarchy.

Mark a few places which do mutate prepared statement state during
execution as mutable. While these are not affecting production today,
as code ages, they may become a source of latent bugs and should be
moved out of the prepared state or evaluated at prepare eventually:

cf_property_defs::_compaction_strategy_class
list_permissions_statement::_resource
permission_altering_statement::_resource
property_definitions::_properties
select_statement::_opts
2019-11-26 14:18:17 +03:00
Pavel Solodovnikov
2f442f28af treewide: add const qualifiers throughout the code base 2019-11-26 02:24:49 +03:00
Pavel Emelyanov
50a1ededde main: Remove now unused defer-with-log helper
Signed-off-by: Pavel Emelyanov <xemul@scylladb.com>
2019-11-25 18:47:03 +03:00
Pavel Emelyanov
a0f92d40ee main: Shut down sighup handler with verbose helper
And (!) fix the misprinted variable name.

Signed-off-by: Pavel Emelyanov <xemul@scylladb.com>
2019-11-25 18:47:03 +03:00
Pavel Emelyanov
0719369d83 repair: Remove extra logging on shutdown
The shutdown start/finish messages are already printed in verbose_shutdown()

Signed-off-by: Pavel Emelyanov <xemul@scylladb.com>
2019-11-25 18:47:03 +03:00
Pavel Emelyanov
2d64fc3a3e main: Shut down database with verbose_shutdown helper
Signed-off-by: Pavel Emelyanov <xemul@scylladb.com>
2019-11-25 18:47:03 +03:00
Pavel Emelyanov
636c300db5 main: Shut down prometheus with verbose_shutdown()
Signed-off-by: Pavel Emelyanov <xemul@scylladb.com>

---

v2:
- Have stop easrlier so that exception in start/listen do
  not prevent prometheu.stop from calling
2019-11-25 18:47:03 +03:00
Pavel Emelyanov
804b152527 main: Sanitize shutting down callbacks
As suggested in issue #4586 here is the helper that prints
"shutting down foo" message, then shuts the foo down, then
prints the "shutting down foo was successfull". In between
it catches the exception (if any) and warns this in logs.

Signed-off-by: Pavel Emelyanov <xemul@scylladb.com>
2019-11-25 18:45:49 +03:00
Nadav Har'El
4160b3630d Merge "Return preimage from CDC only when it's enabled"
Merged pull request https://github.com/scylladb/scylla/pull/5218
from Piotr Jastrzębski:

Users should be able to decide whether they need preimage or not. There is
already an option for that but it's not respected by the implementation.
This PR adds support for this functionality.

Tests: unit(dev).

Individual patches:
  cdc: Don't take storage_proxy as transformer::pre_image_select param
  cdc::append_log_mutations: use do_with instead of shared_ptr
  cdc::append_log_mutations: fix undefined behavior
  cdc: enable preimage in test_pre_image_logging test
  cdc: Return preimage only when it's requested
  cdc: test both enabled and disabled preimage in test_pre_image_logging
2019-11-25 14:32:17 +02:00
Pavel Emelyanov
f6ac969f1e mm: Stop migration manager
Before stopping the db itself, stop the migration service.
It must be stopped before RPC, but RPC is not stopped yet
itself, so we should be safe here.

Here's the tail of the resulting logs:

INFO  2019-11-20 11:22:35,193 [shard 0] init - shutdown migration manager
INFO  2019-11-20 11:22:35,193 [shard 0] migration_manager - stopping migration service
INFO  2019-11-20 11:22:35,193 [shard 1] migration_manager - stopping migration service
INFO  2019-11-20 11:22:35,193 [shard 0] init - Shutdown database started
INFO  2019-11-20 11:22:35,193 [shard 0] init - Shutdown database finished
INFO  2019-11-20 11:22:35,193 [shard 0] init - stopping prometheus API server
INFO  2019-11-20 11:22:35,193 [shard 0] init - Scylla version 666.development-0.20191120.25820980f shutdown complete.

Also -- stop the mm on drain before the commitlog it stopped.
[Tomasz: mm needs the cl because pulling schema changes from other nodes
involves applying them into the database. So cl/db needs to be
stopped after mm is stopped.]

The drain logs would look like

...
INFO  2019-11-25 11:00:40,562 [shard 0] migration_manager - stopping migration service
INFO  2019-11-25 11:00:40,562 [shard 1] migration_manager - stopping migration service
INFO  2019-11-25 11:00:40,563 [shard 0] storage_service - DRAINED:

and then on stop

...
INFO  2019-11-25 11:00:46,427 [shard 0] init - shutdown migration manager
INFO  2019-11-25 11:00:46,427 [shard 0] init - Shutdown database started
INFO  2019-11-25 11:00:46,427 [shard 0] init - Shutdown database finished
INFO  2019-11-25 11:00:46,427 [shard 0] init - stopping prometheus API server
INFO  2019-11-25 11:00:46,427 [shard 0] init - Scylla version 666.development-0.20191125.3eab6cd54 shutdown complete.

Fixes #5300

Signed-off-by: Pavel Emelyanov <xemul@scylladb.com>
Message-Id: <20191125080605.7661-1-xemul@scylladb.com>
2019-11-25 12:59:01 +01:00
Asias He
6ec602ff2c repair: Fix rx_hashes_nr metrics (#5213)
In get_full_row_hashes_with_rpc_stream and
repair_get_row_diff_with_rpc_stream_process_op which were introduced in
the "Repair switch to rpc stream" series, rx_hashes_nr metrics are not
updated correctly.

In the test we have 3 nodes and run repair on node3, we makes sure the
following metrics are correct.

assertEqual(node1_metrics['scylla_repair_tx_hashes_nr'] + node2_metrics['scylla_repair_tx_hashes_nr'],
   	    node3_metrics['scylla_repair_rx_hashes_nr'])
assertEqual(node1_metrics['scylla_repair_rx_hashes_nr'] + node2_metrics['scylla_repair_rx_hashes_nr'],
   	    node3_metrics['scylla_repair_tx_hashes_nr'])
assertEqual(node1_metrics['scylla_repair_tx_row_nr'] + node2_metrics['scylla_repair_tx_row_nr'],
   	    node3_metrics['scylla_repair_rx_row_nr'])
assertEqual(node1_metrics['scylla_repair_rx_row_nr'] + node2_metrics['scylla_repair_rx_row_nr'],
   	    node3_metrics['scylla_repair_tx_row_nr'])
assertEqual(node1_metrics['scylla_repair_tx_row_bytes'] + node2_metrics['scylla_repair_tx_row_bytes'],
   	    node3_metrics['scylla_repair_rx_row_bytes'])
assertEqual(node1_metrics['scylla_repair_rx_row_bytes'] + node2_metrics['scylla_repair_rx_row_bytes'],
            node3_metrics['scylla_repair_tx_row_bytes'])

Tests: repair_additional_test.py:RepairAdditionalTest.repair_almost_synced_3nodes_test
Fixes: #5339
Backports: 3.2
2019-11-25 13:57:37 +02:00
Piotr Jastrzebski
2999cb5576 cdc: test both enabled and disabled preimage in test_pre_image_logging
Signed-off-by: Piotr Jastrzebski <piotr@scylladb.com>
2019-11-25 12:43:39 +01:00
Piotr Jastrzebski
222b94c707 cdc: Return preimage only when it's requested
Signed-off-by: Piotr Jastrzebski <piotr@scylladb.com>
2019-11-25 12:43:39 +01:00
Piotr Jastrzebski
c94a5947b7 cdc: enable preimage in test_pre_image_logging test
Signed-off-by: Piotr Jastrzebski <piotr@scylladb.com>
2019-11-25 12:43:39 +01:00
Piotr Jastrzebski
595c9f9d32 cdc::append_log_mutations: fix undefined behavior
The code was iterating over a collection that was modified
at the same time. Iterators were used for that and collection
modification can invalidate all iterators.

Signed-off-by: Piotr Jastrzebski <piotr@scylladb.com>
2019-11-25 12:43:39 +01:00
Piotr Jastrzebski
f0f44f9c51 cdc::append_log_mutations: use do_with instead of shared_ptr
This will not only safe some allocations but also improve
code readability.

Signed-off-by: Piotr Jastrzebski <piotr@scylladb.com>
2019-11-25 12:43:39 +01:00
Piotr Jastrzebski
b8d9158c21 cdc: Don't take storage_proxy as transformer::pre_image_select param
transformer has access to storage_proxy through its _ctx field.

Signed-off-by: Piotr Jastrzebski <piotr@scylladb.com>
2019-11-25 12:43:39 +01:00
Nadav Har'El
3eab6cd549 Merged "toolchain: update to Fedora 31"
Merged pull request https://github.com/scylladb/scylla/pull/5310 from
Avi Kivity:

This is a minor update as gcc and boost versions did not change. A noteable
update is patchelf 0.10, which adds support to large binaries.

A few minor issues exposed by the update are fixed in preparatory patches.

Patches:
  dist: rpm: correct systemd post-uninstall scriptlet
  build: force xz compression on rpm binary payload
  tools: toolchain: update to Fedora 31
2019-11-24 13:38:45 +02:00
Tomasz Grabiec
e3d025d014 row_cache: Fix abort on bad_alloc during cache update
Since 90d6c0b, cache will abort when trying to detach partition
entries while they're updated. This should never happen. It can happen
though, when the update fails on bad_alloc, because the cleanup guard
invalidates the cache before it releases partition snapshots (held by
"update" coroutine).

Fix by destroying the coroutine first.

Fixes #5327.

Tests:
  - row_cache_test (dev)

Message-Id: <1574360259-10132-1-git-send-email-tgrabiec@scylladb.com>
2019-11-24 12:06:51 +02:00
Rafael Ávila de Espíndola
8599f8205b rpmbuild: don't use dwz
By default rpm uses dwz to merge the debug info from various
binaries. Unfortunately, it looks like addr2line has not been updated
to handle this:

// This works
$ addr2line  -e build/release/scylla 0x1234567

$ dwz -m build/release/common.debug build/release/scylla.debug build/release/iotune.debug

// now this fails
$ addr2line -e build/release/scylla 0x1234567

I think the issue is

https://sourceware.org/bugzilla/show_bug.cgi?id=23652

Fixes #5289

Signed-off-by: Rafael Ávila de Espíndola <espindola@scylladb.com>
Message-Id: <20191123015734.89331-1-espindola@scylladb.com>
2019-11-24 11:35:29 +02:00
Rafael Ávila de Espíndola
25d5d39b3c reloc: Force using sha1 for build-ids
The default build-id used by lld is xxhash, which is 8 bytes long. rpm
requires build-ids to be at least 16 bytes long
(https://github.com/rpm-software-management/rpm/issues/950). We force
using sha1 for now. That has no impact in gold and bfd since that is
their default. We set it in here instead of configure.py to not slow
down regular builds.

Signed-off-by: Rafael Ávila de Espíndola <espindola@scylladb.com>
Message-Id: <20191123020801.89750-1-espindola@scylladb.com>
2019-11-24 11:35:29 +02:00
Rafael Ávila de Espíndola
b5667b9c31 build: don't compress debug info in executables
By default we were compressing debug info only in release
executables. The idea, if I understand it correctly, is that those are
the ones we ship, so we want a more compact binary.

I don't think that was doing anything useful. The compression is just
gzip, so when we ship a .tar.xz, having the debug info compressed
inside the scylla binary probably reduces the overall compression a
bit.

When building a rpm the situation in amusing. As part of the rpm
build process the debug info is decompressed and extracted to an
external file.

Given that most of the link time goes to compressing debug info, it is
probably a good idea to just skip that.

Signed-off-by: Rafael Ávila de Espíndola <espindola@scylladb.com>
Message-Id: <20191123022825.102837-1-espindola@scylladb.com>
2019-11-24 11:35:29 +02:00
Tomasz Grabiec
d84859475e Merge "Refactor test.py and cleanup resources" from Kostja
Structure the code to be able to introduce futures.
Apply trivial cleanups.
Switch to asyncio and use it to work with processes and
handle signals. Cleanup all processes upon signal.
2019-11-24 11:35:29 +02:00