mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-13 18:02:24 +00:00
98 lines
4.9 KiB
Bash
Executable File
98 lines
4.9 KiB
Bash
Executable File
#!/usr/bin/env bash
|
|
# shellcheck source=./mergetree_mutations.lib
|
|
. "$CURDIR"/mergetree_mutations.lib
|
|
|
|
function try_sync_replicas()
|
|
{
|
|
table_name_prefix=$1
|
|
|
|
readarray -t empty_partitions_arr < <(${CLICKHOUSE_CLIENT} -q \
|
|
"SELECT DISTINCT substr(new_part_name, 1, position(new_part_name, '_') - 1) AS partition_id
|
|
FROM system.replication_queue
|
|
WHERE (database = currentDatabase()) AND (table LIKE '$table_name_prefix%') AND (last_exception LIKE '%No active replica has part%') AND (partition_id NOT IN (
|
|
SELECT partition_id
|
|
FROM system.parts
|
|
WHERE (database = currentDatabase()) AND (table LIKE '$table_name_prefix%')
|
|
))")
|
|
readarray -t tables_arr < <(${CLICKHOUSE_CLIENT} -q "SELECT name FROM system.tables WHERE database=currentDatabase() AND name like '$table_name_prefix%' AND engine like '%Replicated%'")
|
|
|
|
for t in "${tables_arr[@]}"
|
|
do
|
|
for p in "${empty_partitions_arr[@]}"
|
|
do
|
|
# Avoid "Empty part ... is not created instead of lost part because there are no parts in partition"
|
|
$CLICKHOUSE_CLIENT -q "ALTER TABLE $t DROP PARTITION ID '$p'" 2>/dev/null
|
|
done
|
|
done
|
|
|
|
for t in "${tables_arr[@]}"
|
|
do
|
|
# The size of log may be big, so increase timeout.
|
|
$CLICKHOUSE_CLIENT --receive_timeout 400 -q "SYSTEM SYNC REPLICA $t" || $CLICKHOUSE_CLIENT -q \
|
|
"select 'sync failed, queue:', * from system.replication_queue where database=currentDatabase() and table='$t' order by database, table, node_name" &
|
|
done
|
|
wait
|
|
echo "Replication did not hang: synced all replicas of $table_name_prefix"
|
|
}
|
|
|
|
function check_replication_consistency()
|
|
{
|
|
table_name_prefix=$1
|
|
check_query_part=$2
|
|
|
|
# Wait for all queries to finish (query may still be running if thread is killed by timeout)
|
|
num_tries=0
|
|
while [[ $($CLICKHOUSE_CLIENT -q "SELECT count() FROM system.processes WHERE current_database=currentDatabase() AND query LIKE '%$table_name_prefix%'") -ne 1 ]]; do
|
|
sleep 0.5;
|
|
num_tries=$((num_tries-1))
|
|
if [ $num_tries -eq 100 ]; then
|
|
$CLICKHOUSE_CLIENT -q "SELECT count() FROM system.processes WHERE current_database=currentDatabase() AND query LIKE '%$table_name_prefix%' FORMAT Vertical"
|
|
break
|
|
fi
|
|
done
|
|
|
|
# Do not check anything if all replicas are readonly,
|
|
# because is this case all replicas are probably lost (it may happen and it's not a bug)
|
|
res=$($CLICKHOUSE_CLIENT -q "SELECT count() - sum(is_readonly) FROM system.replicas WHERE database=currentDatabase() AND table LIKE '$table_name_prefix%'")
|
|
if [ $res -eq 0 ]; then
|
|
# Print dummy lines
|
|
echo "Replication did not hang: synced all replicas of $table_name_prefix"
|
|
echo "Consistency: 1"
|
|
return 0
|
|
fi
|
|
|
|
# Trigger pullLogsToQueue(...) and updateMutations(...) on some replica to make it pull all mutations, so it will be possible to kill them
|
|
some_table=$($CLICKHOUSE_CLIENT -q "SELECT name FROM system.tables WHERE database=currentDatabase() AND name like '$table_name_prefix%' ORDER BY rand() LIMIT 1")
|
|
$CLICKHOUSE_CLIENT --receive_timeout 3 -q "SYSTEM SYNC REPLICA $some_table" 1>/dev/null 2>/dev/null ||:
|
|
some_table=$($CLICKHOUSE_CLIENT -q "SELECT name FROM system.tables WHERE database=currentDatabase() AND name like '$table_name_prefix%' ORDER BY rand() LIMIT 1")
|
|
$CLICKHOUSE_CLIENT --receive_timeout 3 -q "SYSTEM SYNC REPLICA $some_table" 1>/dev/null 2>/dev/null ||:
|
|
|
|
# Forcefully cancel mutations to avoid waiting for them to finish
|
|
${CLICKHOUSE_CLIENT} -q "KILL MUTATION WHERE database=currentDatabase() AND table like '$table_name_prefix%'" > /dev/null
|
|
|
|
# SYNC REPLICA is not enough if some MUTATE_PARTs are not assigned yet
|
|
wait_for_all_mutations "$table_name_prefix%"
|
|
|
|
try_sync_replicas "$table_name_prefix"
|
|
|
|
res=$($CLICKHOUSE_CLIENT -q \
|
|
"SELECT
|
|
if((countDistinct(data) as c) == 0, 1, c)
|
|
FROM
|
|
(
|
|
SELECT _table, ($check_query_part) AS data
|
|
FROM merge(currentDatabase(), '$table_name_prefix') GROUP BY _table
|
|
)")
|
|
|
|
echo "Consistency: $res"
|
|
if [ $res -ne 1 ]; then
|
|
echo "Replicas have diverged:"
|
|
$CLICKHOUSE_CLIENT -q "select 'data', _table, $check_query_part, arraySort(groupArrayDistinct(_part)) from merge(currentDatabase(), '$table_name_prefix') group by _table order by _table"
|
|
$CLICKHOUSE_CLIENT -q "select 'queue', * from system.replication_queue where database=currentDatabase() and table like '$table_name_prefix%' order by database, table, node_name"
|
|
$CLICKHOUSE_CLIENT -q "select 'mutations', * from system.mutations where database=currentDatabase() and table like '$table_name_prefix%' order by database, table, mutation_id"
|
|
$CLICKHOUSE_CLIENT -q "select 'parts', * from system.parts where database=currentDatabase() and table like '$table_name_prefix%' order by database, table, name"
|
|
echo "Good luck with debugging..."
|
|
fi
|
|
|
|
}
|