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sqllogfill lower-gen testcase
Signed-off-by: mhannum <mhannum@bloomberg.net>
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‎tests/sqllogfill_reset_gen.test/Makefile‎

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ifeq ($(TESTSROOTDIR),)
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include ../testcase.mk
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else
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include $(TESTSROOTDIR)/testcase.mk
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endif
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export CHECK_DB_AT_FINISH=0
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ifeq ($(TEST_TIMEOUT),)
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export TEST_TIMEOUT=10m
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endif
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‎tests/sqllogfill_reset_gen.test/lrl.options‎

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# Disable features that prevent generation from going backwards
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berkattr elect_highest_committed_gen 0
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retrieve_gen_from_ckp 0
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match_on_ckp 0
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emit_gen_commits 0
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endianize_locklist 0
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sql_logfill 1
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sql_logfill_debug 1
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recovery_ckp 0
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logmsg level debug

‎tests/sqllogfill_reset_gen.test/runit‎

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#!/usr/bin/env bash
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bash -n "$0" | exit 1
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. ${TESTSROOTDIR}/tools/runit_common.sh
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. ${TESTSROOTDIR}/tools/cluster_utils.sh
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export debug=1
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[[ "$debug" == "1" ]] && set -x
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db=$1
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cnt=$(echo $CLUSTER | wc -w)
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if [[ -z "$CLUSTER" || $cnt -lt 3 ]]; then
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echo "This test requires a clustered installation of at least 3 nodes"
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exit 0
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fi
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function get_log_file {
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local master=$(get_master)
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$CDB2SQL_EXE ${CDB2_OPTIONS} --tabs $db --host $master "exec procedure sys.cmd.send('bdb cluster')" 2>/dev/null | grep "MASTER" | awk '{print $7}' | cut -d':' -f1
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}
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function do_writes {
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# Get initial log file
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local start_logfile=$(get_log_file)
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while [[ -z "$start_logfile" ]]; do
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echo "Waiting for log file to be available..."
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sleep 1
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start_logfile=$(get_log_file)
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done
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echo "Inserting records until log advances (starting at logfile $start_logfile)"
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# Insert records in batches until log file advances
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local batch_size=1000
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local total_inserted=0
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local current_logfile=$start_logfile
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while [[ "$current_logfile" == "$start_logfile" ]]; do
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$CDB2SQL_EXE ${CDB2_OPTIONS} $db default "insert into t1 select value, value from generate_series(1, $batch_size)" >/dev/null 2>&1
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total_inserted=$((total_inserted + batch_size))
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current_logfile=$(get_log_file)
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done
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echo " Log file advanced from $start_logfile to $current_logfile after $total_inserted inserts"
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}
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function force_checkpoint {
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local node=$1
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echo "Forcing checkpoint on $node"
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$CDB2SQL_EXE ${CDB2_OPTIONS} $db @$node "exec procedure sys.cmd.send('flush')" >/dev/null 2>&1
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}
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function check_ignore_message {
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echo "Checking logs for 'ignoring generation check' message"
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local found=0
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for node in $CLUSTER; do
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local logfile="${TESTDIR}/logs/${db}.${node}.db"
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if [[ -f "$logfile" ]] && grep -q "ignoring generation check" "$logfile" 2>/dev/null; then
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echo " Found in $node log"
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found=1
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fi
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done
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if [[ $found -eq 0 ]]; then
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stop_all_nodes
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failexit "Did not find expected 'ignoring generation check' message in any node logs"
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else
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echo " SUCCESS: Found generation check ignore message"
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fi
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}
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function runit {
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echo "=== Starting SQL logfill generation wraparound test ==="
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# Get initial master
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master=$(get_master)
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echo "Initial master: $master"
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# Create table
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echo "Creating test table"
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$CDB2SQL_EXE ${CDB2_OPTIONS} $db --host $master "drop table if exists t1" >/dev/null 2>&1
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$CDB2SQL_EXE ${CDB2_OPTIONS} $db --host $master "create table t1 (id int, val int)" >/dev/null 2>&1 || failexit "Failed to create table"
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# Get initial generation
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initial_gen=$(get_node_gen $master)
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echo "Initial generation: $initial_gen"
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# Phase 1: Increment generation through elections
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echo "=== Phase 1: Incrementing generation through elections ==="
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for i in {1..10}; do
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# Get current master and generation
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master=$(get_master)
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current_gen=$(get_node_gen $master)
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echo " Iteration $i: gen=$current_gen, master=$master"
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# Downgrade master to force election
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echo " Forcing election via downgrade"
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downgrade_master
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# Get new master and generation after election
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master=$(get_master)
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new_gen=$(get_node_gen $master)
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echo " After election: gen=$new_gen, new_master=$master"
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# Insert records to push log forward on new master
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do_writes
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# Force checkpoint on master to capture current generation
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force_checkpoint $master
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done
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# Record high generation and data count
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high_gen=$(get_node_gen $master)
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echo "Highest generation reached: $high_gen"
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# Phase 2: Stop and restart entire cluster
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echo "=== Phase 2: Stopping and restarting cluster ==="
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# Get first node from cluster
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first_node=$(echo $CLUSTER | awk '{print $1}')
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echo "Stopping first node: $first_node"
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kill_by_pidfile ${TMPDIR}/${DBNAME}.${first_node}.pid
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# Could have been master- wait for a new master
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master=$(get_master)
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while [[ -z "$master" ]]; do
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echo "Waiting for new master after stopping $first_node..."
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sleep 1
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master=$(get_master)
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done
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# Insert more records to create gap in first node's log
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echo "Inserting records to create gap in $first_node log"
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do_writes
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count_before=$($CDB2SQL_EXE -tabs ${CDB2_OPTIONS} $db default "select count(*) from t1" 2>/dev/null)
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if [[ -z "$count_before" ]] || [[ "$count_before" -eq 0 ]]; then
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failexit "No records found before restart"
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fi
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echo "Record count before restart: $count_before"
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echo "Pushnext to advance the log"
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${CDB2SQL_EXE} ${CDB2_OPTIONS} $DBNAME --host $master "exec procedure sys.cmd.send('pushnext')"
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# Wait for all nodes to write a checkpoint
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sleep 5
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echo "Stopping remaining cluster nodes"
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for node in $CLUSTER; do
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if [[ "$node" != "$first_node" ]]; then
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kill_by_pidfile ${TMPDIR}/${DBNAME}.${node}.pid
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fi
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done
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echo "Verifying that all nodes are down"
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for node in $CLUSTER; do
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$CDB2SQL_EXE ${CDB2_OPTIONS} $db --host $node "select 1" >/dev/null 2>&1
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if [[ $? -eq 0 ]]; then
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stop_all_nodes
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failexit "Node $node is still up after kill"
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else
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echo "Node $node is down as expected"
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fi
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done
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echo "Starting entire cluster"
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start_all_nodes
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sleep 10
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echo "Waiting for cluster coherency"
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wait_for_cluster
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# Get generation after restart
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master=$(get_master)
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restart_gen=$(get_node_gen $master)
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echo "Generation after restart: $restart_gen (master: $master)"
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# Verify generation wrapped
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if [[ -z "$restart_gen" ]]; then
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stop_all_nodes
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failexit "Could not get generation after restart"
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fi
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if [[ $restart_gen -ge $high_gen ]]; then
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stop_all_nodes
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failexit "Generation did not reset after restart (restart_gen=$restart_gen >= high_gen=$high_gen)"
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else
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echo "SUCCESS: Generation reset confirmed (restart_gen=$restart_gen < high_gen=$high_gen)"
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fi
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# Phase 3: Verify sql_logfill works correctly
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echo "=== Phase 3: Verifying sql_logfill with generation mismatch ==="
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# Give sql_logfill time to catch up
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echo "Waiting for sql_logfill to process gap records..."
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sleep 30
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# Verify data integrity
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count_after=$($CDB2SQL_EXE -tabs ${CDB2_OPTIONS} $db default "select count(*) from t1" 2>/dev/null)
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echo "Record count after restart: $count_after"
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if [[ -z "$count_after" ]]; then
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stop_all_nodes
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failexit "Could not get record count after restart"
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fi
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if [[ "$count_before" != "$count_after" ]]; then
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stop_all_nodes
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failexit "Record count mismatch (before=$count_before, after=$count_after)"
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fi
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echo "SUCCESS: Data integrity verified (count=$count_after)"
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# Check for ignore message in logs
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check_ignore_message
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echo "=== Test completed successfully ==="
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echo "Summary:"
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echo " High generation during run: $high_gen"
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echo " Generation after restart: $restart_gen"
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echo " Records verified: $count_after"
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}
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runit
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stop_all_nodes
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echo "Success"

‎tests/tools/cluster_utils.sh‎

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{
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[[ "$debug" == 1 ]] && set -x
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typeset func="get_master"
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x=$($CDB2SQL_EXE $CDB2_OPTIONS --tabs $DBNAME default 'exec procedure sys.cmd.send("bdb cluster")' | grep MASTER | cut -f1 -d":" | tr -d '[:space:]')
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x=$($CDB2SQL_EXE $CDB2_OPTIONS --tabs $DBNAME default 'exec procedure sys.cmd.send("bdb cluster")' 2>/dev/null | grep MASTER | cut -f1 -d":" | tr -d '[:space:]')
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echo "$x"
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}
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# Double check that the cluster is up
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wait_for_cluster
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}
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stop_all_nodes() {
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if [[ -z "$CLUSTER" ]]; then
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kill_by_pidfile ${TMPDIR}/${DBNAME}.pid
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return
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fi
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for node in $CLUSTER; do
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kill_by_pidfile ${TMPDIR}/${DBNAME}.${node}.pid
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done
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}
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start_all_nodes() {
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local SSH="ssh -n -o StrictHostKeyChecking=no -tt"
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local LOGDIR=$TESTDIR/logs
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PARAMS="$DBNAME --no-global-lrl"
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if [[ -z "$CLUSTER" ]]; then
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mv --backup=numbered $LOGDIR/${DBNAME}.db $LOGDIR/${DBNAME}.db.1
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${DEBUG_PREFIX} ${COMDB2_EXE} ${PARAMS} --lrl ${DBDIR}/${DBNAME}.lrl -pidfile ${TMPDIR}/${DBNAME}.pid 2>&1 | gawk '{ print strftime("%H:%M:%S>"), $0; fflush(); }' >$TESTDIR/logs/${DBNAME}.db 2>&1 &
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return
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fi
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for node in $CLUSTER; do
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mv --backup=numbered $LOGDIR/${DBNAME}.${node}.db $LOGDIR/${DBNAME}.${node}.db.1
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if [ $node == $(hostname) ] ; then
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${DEBUG_PREFIX} ${COMDB2_EXE} ${PARAMS} --lrl ${DBDIR}/${DBNAME}.lrl -pidfile ${TMPDIR}/${DBNAME}.$node.pid 2>&1 | gawk '{ print strftime("%H:%M:%S>"), $0; fflush(); }' >$TESTDIR/logs/${DBNAME}.${node}.db 2>&1 &
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else
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CMD="source ${TESTDIR}/replicant_vars ; ${COMDB2_EXE} ${PARAMS} --lrl ${DBDIR}/${DBNAME}.lrl -pidfile ${TMPDIR}/${DBNAME}.${node}.pid"
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$SSH $node ${DEBUG_PREFIX} ${CMD} 2>&1 </dev/null > >(gawk '{ print strftime("%H:%M:%S>"), $0; fflush(); }' >> $TESTDIR/logs/${DBNAME}.${node}.db) &
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echo $! > ${TMPDIR}/${DBNAME}.${node}.pid
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fi
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done
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}

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