Verify client dbstore only on master

Signed-off-by: Mark Hannum <mhannum72@gmail.com>

bdb/llmeta.c

@@ -1329,6 +1329,7 @@ static const uint8_t *llmeta_tablename_alias_data_get(
     return p_buf;
 }
 
+int gbl_llmeta_pagesize = 0;
 /* opens the low level meta table, if this is not called, any calls to
  * bdb_get_file_version* will return successfully but with a 0 version_number
  * any calls to bdb_new_file_version will fail */
@@ -1343,8 +1344,8 @@ int bdb_llmeta_open(char name[], char dir[], bdb_state_type *parent_bdb_handle,
         return 0;
     }
 
-    llmeta_bdb_state = bdb_open_more_lite(
-            name, dir, 0, LLMETA_IXLEN, 0, parent_bdb_handle, NULL, 0, bdberr);
+    llmeta_bdb_state =
+        bdb_open_more_lite(name, dir, 0, LLMETA_IXLEN, gbl_llmeta_pagesize, parent_bdb_handle, NULL, 0, bdberr);
 
     BDB_RELLOCK();
 

db/db_tunables.c

@@ -106,6 +106,7 @@ extern int gbl_fdb_remsql_cdb2api;
 extern int gbl_goslow;
 extern int gbl_heartbeat_send;
 extern int gbl_keycompr;
+extern int gbl_llmeta_pagesize;
 extern int gbl_largepages;
 extern int gbl_loghist;
 extern int gbl_loghist_verbose;
@@ -171,6 +172,7 @@ extern int diffstat_thresh;
 extern int reqltruncate;
 extern int analyze_max_comp_threads;
 extern int analyze_max_table_threads;
+extern int gbl_always_reload_analyze;
 extern int gbl_block_set_commit_genid_trace;
 extern int gbl_random_prepare_commit;
 extern int gbl_all_prepare_commit;

db/db_tunables.h

@@ -71,6 +71,8 @@ REGISTER_TUNABLE("analyze_tbl_threads",
                  "generating index statistics. (Default: 5)",
                  TUNABLE_INTEGER, &analyze_max_table_threads, READONLY, NULL,
                  NULL, analyze_set_max_table_threads, NULL);
+REGISTER_TUNABLE("always_reload_analyze", "Reload analyze data on every query. (Default: off)", TUNABLE_BOOLEAN,
+                 &gbl_always_reload_analyze, 0, NULL, NULL, NULL, NULL);
 REGISTER_TUNABLE("archive_on_init",
                  "Archive files with database extensions in the database directory "
                  "at the time of init. (Default: ON)",
@@ -943,11 +945,8 @@ REGISTER_TUNABLE("page_latches",
                  TUNABLE_BOOLEAN, &gbl_page_latches, READONLY | NOARG, NULL, NULL, NULL, NULL);
 REGISTER_TUNABLE("pageordertablescan", "Perform table scans in page order and not row order. (Default: off)",
                  TUNABLE_BOOLEAN, &gbl_page_order_table_scan, NOARG, NULL, NULL, page_order_table_scan_update, NULL);
-/*
-REGISTER_TUNABLE("pagesize", NULL, TUNABLE_INTEGER,
-                 &placeholder, DEPRECATED_TUNABLE|READONLY, NULL, NULL, NULL,
-                 NULL);
-*/
+REGISTER_TUNABLE("llmeta_pagesize", "Init-option for llmeta and metadb pagesizes.  (Default: 4096)", TUNABLE_INTEGER,
+                 &gbl_llmeta_pagesize, READONLY | READEARLY, NULL, NULL, NULL, NULL);
 REGISTER_TUNABLE("parallel_recovery", NULL, TUNABLE_INTEGER,
                  &gbl_parallel_recovery_threads, READONLY, NULL, NULL, NULL,
                  NULL);

db/sqlglue.c

@@ -13093,6 +13093,13 @@ int verify_dbstore_client_function(const char *dbstore)
     int rc = 0;
     strbuf *sql;
 
+    /* This deadlocks in replication.  On the master, this is called
+     * from do_schema_change_tran_thd (prior to finalize).  This thread
+     * calls do_alter_table with tran set to NULL, so no self-deadlock. */
+    if (!bdb_iam_master(thedb->bdb_env) || gbl_is_physical_replicant) {
+        return 0;
+    }
+
     sql = strbuf_new();
     strbuf_appendf(sql, "TESTDEFAULT (%s)", dbstore);
 

db/sqlinterfaces.c

@@ -2658,6 +2658,8 @@ static int reload_analyze(struct sqlthdstate *thd, struct sqlclntstate *clnt,
                thd->dbopen_gen, bdb_get_dbopen_gen(), thd->analyze_gen, \
                cached_analyze_gen, thd->views_gen, gbl_views_gen);
 
+int gbl_always_reload_analyze = 0;
+
 // Call with schema_lk held and in_sqlite_init == 1
 static int check_thd_gen(struct sqlthdstate *thd, struct sqlclntstate *clnt, int flags)
 {
@@ -2675,7 +2677,7 @@ static int check_thd_gen(struct sqlthdstate *thd, struct sqlclntstate *clnt, int
         TRK;
         return SQLITE_SCHEMA;
     }
-    if (thd->analyze_gen != cached_analyze_gen) {
+    if ((thd->analyze_gen != cached_analyze_gen) || gbl_always_reload_analyze) {
         int ret;
         TRK;
         stmt_cache_reset(thd->stmt_cache);

tests/sc_dbstore_func.test/lrl.options

@@ -0,0 +1,4 @@
+# Force large pages in llmeta
+llmeta_pagesize 65536
+always_reload_analyze 1
+

tests/sc_dbstore_func.test/runit

@@ -3,7 +3,7 @@ bash -n "$0" | exit 1
 
 dbnm=$1
 
-cat << EOF | cdb2sql ${CDB2_OPTIONS} -tabs -s $dbnm default - >output.actual 2>&1
+cat << EOF | timeout -s 9 60s cdb2sql ${CDB2_OPTIONS} -tabs -s $dbnm default - >output.actual 2>&1
 SELECT "- Testing dbstore now() -"
 CREATE TABLE t1 { tag ondisk { int i } }\$\$
 INSERT INTO t1 VALUES (1)
@@ -40,6 +40,25 @@ EOF
 
 diff output.actual output.expected
 
+function verify_all_replicants()
+{
+    if [[ -z "$CLUSTER" ]]; then
+        return 0
+    fi
+
+    for node in $CLUSTER ; do
+        x=$(timeout -s 9 10s cdb2sql ${CDB2_OPTIONS} -tabs -s ${DBNAME} --host $node "select 1")
+        if [[ $? -ne 0 || "$x" != "1" ]]; then
+            echo "Failed to connect to $node"
+            exit 1
+        fi
+    done
+}
+
+# Alter again, and verify that we do not hang on replicants
+timeout -s 9 20s cdb2sql ${CDB2_OPTIONS} -tabs $dbnm default "ALTER TABLE t1 { `cat t1_hang.csc2` }"
+verify_all_replicants
+
 # Make sure we can create a new db which specifies a client-function dbstore, 
 # but that we fail to create a new db which has an invalid dbstore function.
 function create_database_with_table()

tests/sc_dbstore_func.test/t1_hang.csc2

@@ -0,0 +1,7 @@
+schema {
+    cstring s[33] dbstore={hex(GUID())}
+    datetime t dbstore={now()} null=yes
+    datetime t3 dbstore={now()} null=yes
+    datetime t4 dbstore={now()} null=yes
+    cstring s2[33] dbstore={hex(GUID())} null=yes
+}

tests/tunables.test/t00_all_tunables.expected

@@ -42,6 +42,7 @@
 (name='altersc_latency_inc', description='How many msec to add to altersc_queue_latency if altersc_latency_thr still reached', type='INTEGER', value='1000', read_only='N')
 (name='altersc_latency_thr', description='Threahoold for alter schema change impact on queue time, as msec/sec increase', type='INTEGER', value='5', read_only='N')
 (name='altersc_sampling_sec', description='Sample average of master queue time every this many seconds', type='INTEGER', value='5', read_only='N')
+(name='always_reload_analyze', description='Reload analyze data on every query. (Default: off)', type='BOOLEAN', value='OFF', read_only='N')
 (name='always_send_cnonce', description='Always send cnonce to master. (Default: on)', type='BOOLEAN', value='ON', read_only='N')
 (name='analyze_comp_threads', description='Number of thread to use when generating samples for computing index statistics. (Default: 10)', type='INTEGER', value='10', read_only='Y')
 (name='analyze_comp_threshold', description='Index file size above which we'll do sampling, rather than scan the entire index. (Default: 104857600)', type='INTEGER', value='104857600', read_only='Y')
@@ -456,6 +457,7 @@
 (name='lkr_part', description='', type='INTEGER', value='23', read_only='Y')
 (name='llmeta', description='', type='BOOLEAN', value='ON', read_only='N')
 (name='llmeta_deadlock_poll', description='Max poll for llmeta on deadlock.  (Default: 0ms)', type='INTEGER', value='0', read_only='N')
+(name='llmeta_pagesize', description='Init-option for llmeta and metadb pagesizes.  (Default: 4096)', type='INTEGER', value='0', read_only='Y')
 (name='load_cache_max_pages', description='Maximum number of pages that will load into cache.  Setting to 0 means that there is no limit.  (Default: 0)', type='INTEGER', value='0', read_only='N')
 (name='load_cache_threads', description='Number of threads loading pages to cache.  (Default: 8)', type='INTEGER', value='8', read_only='N')
 (name='loadcache.dump_on_full', description='Dump status on full queue.', type='BOOLEAN', value='OFF', read_only='N')