mariadb/storage/tokudb/ha_tokudb_admin.cc

/* -*- mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*- */
// vim: ft=cpp:expandtab:ts=8:sw=4:softtabstop=4:
#ident "$Id$"
/*======
This file is part of TokuDB


Copyright (c) 2006, 2015, Percona and/or its affiliates. All rights reserved.

    TokuDBis is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License, version 2,
    as published by the Free Software Foundation.

    TokuDB is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with TokuDB.  If not, see <http://www.gnu.org/licenses/>.

======= */

#ident "Copyright (c) 2006, 2015, Percona and/or its affiliates. All rights reserved."

#include "toku_time.h"

struct analyze_progress_extra {
    THD *thd;
    TOKUDB_SHARE *share;
    TABLE_SHARE *table_share;
    uint key_i;
    const char *key_name;
    time_t t_start;
    char *write_status_msg;
};

static int analyze_progress(void *v_extra, uint64_t rows) {
    struct analyze_progress_extra *extra = (struct analyze_progress_extra *) v_extra;
    THD *thd = extra->thd;
    if (thd_killed(thd))
        return ER_ABORTING_CONNECTION;

    time_t t_now = time(0);
    time_t t_limit = THDVAR(thd, analyze_time);
    time_t t_start = extra->t_start;
    if (t_limit > 0 && t_now - t_start > t_limit)
        return ETIME;
    float progress_rows = 0.0;
    TOKUDB_SHARE *share = extra->share;
    if (share->rows > 0)
        progress_rows = (float) rows / (float) share->rows;
    float progress_time = 0.0;
    if (t_limit > 0)
        progress_time = (float) (t_now - t_start) / (float) t_limit;
    char *write_status_msg = extra->write_status_msg;
    TABLE_SHARE *table_share = extra->table_share;
    sprintf(write_status_msg, "%.*s.%.*s.%s %u of %u %.lf%% rows %.lf%% time", 
            (int) table_share->db.length, table_share->db.str,
            (int) table_share->table_name.length, table_share->table_name.str,
            extra->key_name, extra->key_i, table_share->keys, progress_rows * 100.0, progress_time * 100.0);
    thd_proc_info(thd, write_status_msg);
    return 0;
}

int ha_tokudb::analyze(THD *thd, HA_CHECK_OPT *check_opt) {
    TOKUDB_HANDLER_DBUG_ENTER("%s", share->table_name);
    const char *orig_proc_info = tokudb_thd_get_proc_info(thd);
    uint64_t rec_per_key[table_share->key_parts];
    int result = HA_ADMIN_OK;

    // stub out analyze if optimize is remapped to alter recreate + analyze
    if (thd_sql_command(thd) != SQLCOM_ANALYZE && thd_sql_command(thd) != SQLCOM_ALTER_TABLE) {
        TOKUDB_HANDLER_DBUG_RETURN(result);
    }

    DB_TXN *txn = transaction;
    if (!txn) {
        result = HA_ADMIN_FAILED;
    }
    uint total_key_parts = 0;
    if (result == HA_ADMIN_OK) {
        // compute cardinality for each key
        for (uint i = 0; result == HA_ADMIN_OK && i < table_share->keys; i++) {
            KEY *key_info = &table_share->key_info[i];
            uint64_t num_key_parts = get_key_parts(key_info);
            const char *key_name = i == primary_key ? "primary" : key_info->name;
            struct analyze_progress_extra analyze_progress_extra = {
                thd, share, table_share, i, key_name, time(0), write_status_msg
            };
            bool is_unique = false;
            if (i == primary_key || (key_info->flags & HA_NOSAME))
                is_unique = true;
            uint64_t rows = 0;
            uint64_t deleted_rows = 0;
            int error = tokudb::analyze_card(share->key_file[i], txn, is_unique, num_key_parts, &rec_per_key[total_key_parts],
                                             tokudb_cmp_dbt_key_parts, analyze_progress, &analyze_progress_extra,
                                             &rows, &deleted_rows);
            sql_print_information("tokudb analyze %d %" PRIu64 " %" PRIu64, error, rows, deleted_rows);
            if (error != 0 && error != ETIME) {
                result = HA_ADMIN_FAILED;
            }
            if (error != 0 && rows == 0 && deleted_rows > 0) {
                result = HA_ADMIN_FAILED;
            }
            double f = THDVAR(thd, analyze_delete_fraction);
            if (result == HA_ADMIN_FAILED || (double) deleted_rows > f * (rows + deleted_rows)) {
                char name[256]; int namelen;
                namelen = snprintf(name, sizeof name, "%.*s.%.*s.%s",
                                  (int) table_share->db.length, table_share->db.str,
                                  (int) table_share->table_name.length, table_share->table_name.str,
                                  key_name);
                thd->protocol->prepare_for_resend();
                thd->protocol->store(name, namelen,  system_charset_info);
                thd->protocol->store("analyze", 7, system_charset_info);
                thd->protocol->store("info", 4, system_charset_info);
                char rowmsg[256]; int rowmsglen;
                rowmsglen = snprintf(rowmsg, sizeof rowmsg, "rows processed %" PRIu64 " rows deleted %" PRIu64, rows, deleted_rows);
                thd->protocol->store(rowmsg, rowmsglen, system_charset_info);
                thd->protocol->write();

                sql_print_information("tokudb analyze on %.*s %.*s",
                                      namelen, name, rowmsglen, rowmsg);
            }
            if (tokudb_debug & TOKUDB_DEBUG_ANALYZE) {
                char name[256]; int namelen;
                namelen = snprintf(name, sizeof name, "%.*s.%.*s.%s",
                                  (int) table_share->db.length, table_share->db.str,
                                  (int) table_share->table_name.length, table_share->table_name.str,
                                  key_name);
                TOKUDB_HANDLER_TRACE("%.*s rows %" PRIu64 " deleted %" PRIu64,
                                     namelen, name, rows, deleted_rows);
                for (uint j = 0; j < num_key_parts; j++)
                    TOKUDB_HANDLER_TRACE("%lu", rec_per_key[total_key_parts+j]);
            }
            total_key_parts += num_key_parts;
        } 
    }
    if (result == HA_ADMIN_OK) {
        int error = tokudb::set_card_in_status(share->status_block, txn, total_key_parts, rec_per_key);
        if (error) 
            result = HA_ADMIN_FAILED;
    }
    thd_proc_info(thd, orig_proc_info);
    TOKUDB_HANDLER_DBUG_RETURN(result);
}

typedef struct hot_optimize_context {
    THD *thd;
    char* write_status_msg;
    ha_tokudb *ha;
    uint progress_stage;
    uint current_table;
    uint num_tables;
    float progress_limit;
    uint64_t progress_last_time;
    uint64_t throttle;
} *HOT_OPTIMIZE_CONTEXT;

static int hot_optimize_progress_fun(void *extra, float progress) {
    HOT_OPTIMIZE_CONTEXT context = (HOT_OPTIMIZE_CONTEXT)extra;
    if (thd_killed(context->thd)) {
        sprintf(context->write_status_msg, "The process has been killed, aborting hot optimize.");
        return ER_ABORTING_CONNECTION;
    }
    float percentage = progress * 100;
    sprintf(context->write_status_msg, "Optimization of index %u of %u about %.lf%% done", context->current_table + 1, context->num_tables, percentage);
    thd_proc_info(context->thd, context->write_status_msg);
#ifdef HA_TOKUDB_HAS_THD_PROGRESS
    if (context->progress_stage < context->current_table) {
        // the progress stage is behind the current table, so move up
        // to the next stage and set the progress stage to current.
        thd_progress_next_stage(context->thd);
        context->progress_stage = context->current_table;
    }
    // the percentage we report here is for the current stage/db
    thd_progress_report(context->thd, (unsigned long long) percentage, 100);
#endif

    // throttle the optimize table
    if (context->throttle) {
        uint64_t time_now = toku_current_time_microsec();
        uint64_t dt = time_now - context->progress_last_time;
        uint64_t throttle_time = 1000000ULL / context->throttle;
        if (throttle_time > dt) {
            usleep(throttle_time - dt);
        }
        context->progress_last_time = toku_current_time_microsec();
    }

    // return 1 if progress has reach the progress limit
    return progress >= context->progress_limit;
}

// flatten all DB's in this table, to do so, peform hot optimize on each db
int ha_tokudb::do_optimize(THD *thd) {
    TOKUDB_HANDLER_DBUG_ENTER("%s", share->table_name);
    int error = 0;
    const char *orig_proc_info = tokudb_thd_get_proc_info(thd);
    uint curr_num_DBs = table->s->keys + tokudb_test(hidden_primary_key);

#ifdef HA_TOKUDB_HAS_THD_PROGRESS
    // each DB is its own stage. as HOT goes through each db, we'll
    // move on to the next stage.
    thd_progress_init(thd, curr_num_DBs);
#endif

    // for each DB, run optimize and hot_optimize
    for (uint i = 0; i < curr_num_DBs; i++) {
        // only optimize the index if it matches the optimize_index_name session variable
        const char *optimize_index_name = THDVAR(thd, optimize_index_name);
        if (optimize_index_name) {
            const char *this_index_name = i >= table_share->keys ? "primary" : table_share->key_info[i].name;
            if (strcasecmp(optimize_index_name, this_index_name) != 0) {
                continue;
            }
        }

        DB* db = share->key_file[i];
        error = db->optimize(db);
        if (error) {
            goto cleanup;
        }

        struct hot_optimize_context hc;
        memset(&hc, 0, sizeof hc);
        hc.thd = thd;
        hc.write_status_msg = this->write_status_msg;
        hc.ha = this;
        hc.current_table = i;
        hc.num_tables = curr_num_DBs;
        hc.progress_limit = THDVAR(thd, optimize_index_fraction);
        hc.progress_last_time = toku_current_time_microsec();
        hc.throttle = THDVAR(thd, optimize_throttle);
        uint64_t loops_run;
        error = db->hot_optimize(db, NULL, NULL, hot_optimize_progress_fun, &hc, &loops_run);
        if (error) {
            goto cleanup;
        }
    }
    error = 0;

cleanup:
#ifdef HA_TOKUDB_HAS_THD_PROGRESS
    thd_progress_end(thd);
#endif
    thd_proc_info(thd, orig_proc_info);
    TOKUDB_HANDLER_DBUG_RETURN(error);
}

int ha_tokudb::optimize(THD *thd, HA_CHECK_OPT *check_opt) {
    TOKUDB_HANDLER_DBUG_ENTER("%s", share->table_name);
    int error;
#if TOKU_OPTIMIZE_WITH_RECREATE
    error = HA_ADMIN_TRY_ALTER;
#else
    error = do_optimize(thd);
#endif
    TOKUDB_HANDLER_DBUG_RETURN(error);
}

struct check_context {
    THD *thd;
};

static int ha_tokudb_check_progress(void *extra, float progress) {
    struct check_context *context = (struct check_context *) extra;
    int result = 0;
    if (thd_killed(context->thd))
        result = ER_ABORTING_CONNECTION;
    return result;
}

static void ha_tokudb_check_info(THD *thd, TABLE *table, const char *msg) {
    if (thd->vio_ok()) {
        char tablename[table->s->db.length + 1 + table->s->table_name.length + 1];
        snprintf(tablename, sizeof tablename, "%.*s.%.*s",
                 (int) table->s->db.length, table->s->db.str,
                 (int) table->s->table_name.length, table->s->table_name.str);
        thd->protocol->prepare_for_resend();
        thd->protocol->store(tablename, strlen(tablename), system_charset_info);
        thd->protocol->store("check", 5, system_charset_info);
        thd->protocol->store("info", 4, system_charset_info);
        thd->protocol->store(msg, strlen(msg), system_charset_info);
        thd->protocol->write();
    }
}

int ha_tokudb::check(THD *thd, HA_CHECK_OPT *check_opt) {
    TOKUDB_HANDLER_DBUG_ENTER("%s", share->table_name);
    const char *orig_proc_info = tokudb_thd_get_proc_info(thd);
    int result = HA_ADMIN_OK;
    int r;

    int keep_going = 1;
    if (check_opt->flags & T_QUICK) {
        keep_going = 0;
    }
    if (check_opt->flags & T_EXTEND) {
        keep_going = 1;
    }

    r = acquire_table_lock(transaction, lock_write);
    if (r != 0)
        result = HA_ADMIN_INTERNAL_ERROR;
    if (result == HA_ADMIN_OK) {
        uint32_t num_DBs = table_share->keys + tokudb_test(hidden_primary_key);
        snprintf(write_status_msg, sizeof write_status_msg, "%s primary=%d num=%d", share->table_name, primary_key, num_DBs);
        if (tokudb_debug & TOKUDB_DEBUG_CHECK) {
            ha_tokudb_check_info(thd, table, write_status_msg);
            time_t now = time(0);
            char timebuf[32];
            TOKUDB_HANDLER_TRACE("%.24s %s", ctime_r(&now, timebuf), write_status_msg);
        }
        for (uint i = 0; i < num_DBs; i++) {
            DB *db = share->key_file[i];
            const char *kname = i == primary_key ? "primary" : table_share->key_info[i].name;
            snprintf(write_status_msg, sizeof write_status_msg, "%s key=%s %u", share->table_name, kname, i);
            thd_proc_info(thd, write_status_msg);
            if (tokudb_debug & TOKUDB_DEBUG_CHECK) {
                ha_tokudb_check_info(thd, table, write_status_msg);
                time_t now = time(0);
                char timebuf[32];
                TOKUDB_HANDLER_TRACE("%.24s %s", ctime_r(&now, timebuf), write_status_msg);
            }
            struct check_context check_context = { thd };
            r = db->verify_with_progress(db, ha_tokudb_check_progress, &check_context, (tokudb_debug & TOKUDB_DEBUG_CHECK) != 0, keep_going);
            if (r != 0) {
                char msg[32 + strlen(kname)];
                sprintf(msg, "Corrupt %s", kname);
                ha_tokudb_check_info(thd, table, msg);
            }
            snprintf(write_status_msg, sizeof write_status_msg, "%s key=%s %u result=%d", share->table_name, kname, i, r);
            thd_proc_info(thd, write_status_msg);
            if (tokudb_debug & TOKUDB_DEBUG_CHECK) {
                ha_tokudb_check_info(thd, table, write_status_msg);
                time_t now = time(0);
                char timebuf[32];
                TOKUDB_HANDLER_TRACE("%.24s %s", ctime_r(&now, timebuf), write_status_msg);
            }
            if (result == HA_ADMIN_OK && r != 0) {
                result = HA_ADMIN_CORRUPT;
                if (!keep_going)
                    break;
            }
        }
    }
    thd_proc_info(thd, orig_proc_info);
    TOKUDB_HANDLER_DBUG_RETURN(result);
}