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https://github.com/ClickHouse/ClickHouse.git
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49 lines
1.4 KiB
Bash
Executable File
49 lines
1.4 KiB
Bash
Executable File
#!/usr/bin/env bash
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CURDIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
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# shellcheck source=../shell_config.sh
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. "$CURDIR"/../shell_config.sh
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$CLICKHOUSE_CLIENT --query="DROP TABLE IF EXISTS table_to_rename"
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$CLICKHOUSE_CLIENT --query="CREATE TABLE table_to_rename(v UInt64, v1 UInt64)ENGINE = MergeTree ORDER BY tuple() SETTINGS min_bytes_for_wide_part = 0"
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$CLICKHOUSE_CLIENT --query="INSERT INTO table_to_rename VALUES (1, 1)"
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# we want to following mutations to stuck
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# That is why we stop merges and wait in loops until they actually start
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$CLICKHOUSE_CLIENT --query="SYSTEM STOP MERGES table_to_rename"
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$CLICKHOUSE_CLIENT --query="ALTER TABLE table_to_rename UPDATE v1 = 77 WHERE 1 = 1 SETTINGS mutations_sync = 2" &
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counter=0 retries=60
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I=0
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while [[ $counter -lt $retries ]]; do
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I=$((I + 1))
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result=$($CLICKHOUSE_CLIENT --query "SELECT count() from system.mutations where database='${CLICKHOUSE_DATABASE}' and table='table_to_rename'")
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if [[ $result == "1" ]]; then
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break;
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fi
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sleep 0.1
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((++counter))
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done
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$CLICKHOUSE_CLIENT --query="ALTER TABLE table_to_rename RENAME COLUMN v1 to v2" &
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# it will not introduce any flakyness
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# just wait that mutation doesn't start
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sleep 3
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$CLICKHOUSE_CLIENT --query="SYSTEM START MERGES table_to_rename"
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wait
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$CLICKHOUSE_CLIENT --query="SELECT * FROM table_to_rename FORMAT JSONEachRow"
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$CLICKHOUSE_CLIENT --query="DROP TABLE IF EXISTS table_to_rename"
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