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Fix old indices not being removed in schema migration leading to slow MySQL queries (#86917) 

fixes #83787
pull/86932/head
J. Nick Koston 2023-01-29 16:33:23 -10:00 committed by GitHub
parent b82ecfdd28
commit 4e9bd09d39
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 16 additions and 11 deletions
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2
homeassistant/components/recorder/db_schema.py
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@ -55,7 +55,7 @@ from .models import StatisticData, StatisticMetaData, process_timestamp
# pylint: disable=invalid-name
Base = declarative_base()
SCHEMA_VERSION = 32
SCHEMA_VERSION = 33
_StatisticsBaseSelfT = TypeVar("_StatisticsBaseSelfT", bound="StatisticsBase")

25
homeassistant/components/recorder/migration.py
View File

@ -505,12 +505,12 @@ def _apply_update( # noqa: C901
timestamp_type = "FLOAT"
if new_version == 1:
_create_index(session_maker, "events", "ix_events_time_fired")
# This used to create ix_events_time_fired, but it was removed in version 32
pass
elif new_version == 2:
# Create compound start/end index for recorder_runs
_create_index(session_maker, "recorder_runs", "ix_recorder_runs_start_end")
# Create indexes for states
_create_index(session_maker, "states", "ix_states_last_updated")
# This used to create ix_states_last_updated bit it was removed in version 32
elif new_version == 3:
# There used to be a new index here, but it was removed in version 4.
pass
@ -529,8 +529,7 @@ def _apply_update( # noqa: C901
_drop_index(session_maker, "states", "states__state_changes")
_drop_index(session_maker, "states", "states__significant_changes")
_drop_index(session_maker, "states", "ix_states_entity_id_created")
_create_index(session_maker, "states", "ix_states_entity_id_last_updated")
# This used to create ix_states_entity_id_last_updated, but it was removed in version 32
elif new_version == 5:
# Create supporting index for States.event_id foreign key
_create_index(session_maker, "states", "ix_states_event_id")
@ -541,20 +540,21 @@ def _apply_update( # noqa: C901
["context_id CHARACTER(36)", "context_user_id CHARACTER(36)"],
)
_create_index(session_maker, "events", "ix_events_context_id")
_create_index(session_maker, "events", "ix_events_context_user_id")
# This used to create ix_events_context_user_id, but it was removed in version 28
_add_columns(
session_maker,
"states",
["context_id CHARACTER(36)", "context_user_id CHARACTER(36)"],
)
_create_index(session_maker, "states", "ix_states_context_id")
_create_index(session_maker, "states", "ix_states_context_user_id")
# This used to create ix_states_context_user_id, but it was removed in version 28
elif new_version == 7:
_create_index(session_maker, "states", "ix_states_entity_id")
# There used to be a ix_states_entity_id index here, but it was removed in later schema
pass
elif new_version == 8:
_add_columns(session_maker, "events", ["context_parent_id CHARACTER(36)"])
_add_columns(session_maker, "states", ["old_state_id INTEGER"])
_create_index(session_maker, "events", "ix_events_context_parent_id")
# This used to create ix_events_context_parent_id, but it was removed in version 28
elif new_version == 9:
# We now get the context from events with a join
# since its always there on state_changed events
@ -572,7 +572,7 @@ def _apply_update( # noqa: C901
# Redundant keys on composite index:
# We already have ix_states_entity_id_last_updated
_drop_index(session_maker, "states", "ix_states_entity_id")
_create_index(session_maker, "events", "ix_events_event_type_time_fired")
# This used to create ix_events_event_type_time_fired, but it was removed in version 32
_drop_index(session_maker, "events", "ix_events_event_type")
elif new_version == 10:
# Now done in step 11
@ -859,6 +859,11 @@ def _apply_update( # noqa: C901
_drop_index(session_maker, "events", "ix_events_event_type_time_fired")
_drop_index(session_maker, "states", "ix_states_last_updated")
_drop_index(session_maker, "events", "ix_events_time_fired")
elif new_version == 33:
# This index is no longer used and can cause MySQL to use the wrong index
# when querying the states table.
# https://github.com/home-assistant/core/issues/83787
_drop_index(session_maker, "states", "ix_states_entity_id")
else:
raise ValueError(f"No schema migration defined for version {new_version}")