Merge bk-internal.mysql.com:/home/bk/mysql-5.1

into  chilla.local:/home/mydev/mysql-5.1-axmrg

CMakeLists.txt

@@ -131,10 +131,10 @@ ADD_SUBDIRECTORY(dbug)
 ADD_SUBDIRECTORY(strings)
 ADD_SUBDIRECTORY(regex)
 ADD_SUBDIRECTORY(mysys)
+ADD_SUBDIRECTORY(zlib)
 ADD_SUBDIRECTORY(extra/yassl)
 ADD_SUBDIRECTORY(extra/yassl/taocrypt)
 ADD_SUBDIRECTORY(extra)
-ADD_SUBDIRECTORY(zlib)
 ADD_SUBDIRECTORY(storage/heap)
 ADD_SUBDIRECTORY(storage/myisam)
 ADD_SUBDIRECTORY(storage/myisammrg)

client/CMakeLists.txt

@@ -95,6 +95,7 @@ ADD_EXECUTABLE(mysqladmin mysqladmin.cc)
 TARGET_LINK_LIBRARIES(mysqladmin mysqlclient mysys dbug yassl taocrypt zlib wsock32)
 
 ADD_EXECUTABLE(mysqlslap mysqlslap.c)
+SET_SOURCE_FILES_PROPERTIES(mysqlslap.c PROPERTIES COMPILE_FLAGS "-DTHREADS")
 TARGET_LINK_LIBRARIES(mysqlslap mysqlclient mysys yassl taocrypt zlib wsock32 dbug)
 
 ADD_EXECUTABLE(echo echo.c)

client/Makefile.am

@@ -76,6 +76,7 @@ mysqlimport_LDADD =		$(CXXLDFLAGS) $(CLIENT_THREAD_LIBS) \
 mysqlshow_SOURCES=		mysqlshow.c
 
 mysqlslap_SOURCES=		mysqlslap.c
+mysqlslap_CFLAGS=		-DTHREAD -UUNDEF_THREADS_HACK
 mysqlslap_LDADD =		$(CXXLDFLAGS) $(CLIENT_THREAD_LIBS) \
 				@CLIENT_EXTRA_LDFLAGS@ \
 				$(LIBMYSQLCLIENT_LA) \

client/client_priv.h

@@ -49,7 +49,6 @@ enum options_client
   OPT_TRIGGERS,
   OPT_MYSQL_ONLY_PRINT,
   OPT_MYSQL_LOCK_DIRECTORY,
-  OPT_MYSQL_SLAP_SLAVE,
   OPT_USE_THREADS,
   OPT_IMPORT_USE_THREADS,
   OPT_MYSQL_NUMBER_OF_QUERY,
@@ -58,6 +57,14 @@ enum options_client
   OPT_TZ_UTC, OPT_AUTO_CLOSE, OPT_CREATE_SLAP_SCHEMA,
   OPT_SLAP_CSV, OPT_SLAP_CREATE_STRING,
   OPT_SLAP_AUTO_GENERATE_SQL_LOAD_TYPE, OPT_SLAP_AUTO_GENERATE_WRITE_NUM,
+  OPT_SLAP_AUTO_GENERATE_ADD_AUTO,
+  OPT_SLAP_AUTO_GENERATE_GUID_PRIMARY,
+  OPT_SLAP_AUTO_GENERATE_EXECUTE_QUERIES,
+  OPT_SLAP_AUTO_GENERATE_SECONDARY_INDEXES,
+  OPT_SLAP_AUTO_GENERATE_UNIQUE_WRITE_NUM,
+  OPT_SLAP_AUTO_GENERATE_UNIQUE_QUERY_NUM,
+  OPT_SLAP_PRE_QUERY,
+  OPT_SLAP_POST_QUERY,
   OPT_MYSQL_REPLACE_INTO, OPT_BASE64_OUTPUT, OPT_SERVER_ID,
   OPT_FIX_TABLE_NAMES, OPT_FIX_DB_NAMES, OPT_SSL_VERIFY_SERVER_CERT,
   OPT_DEBUG_INFO, OPT_COLUMN_TYPES

mysql-test/mysql-test-run.pl

@@ -1885,8 +1885,7 @@ sub environment_setup () {
       mtr_native_path($exe_mysqlslap) .
       " -uroot " .
       "--port=$master->[0]->{'port'} " .
-      "--socket=$master->[0]->{'path_sock'} --password= " .
-      "--lock-directory=$opt_tmpdir";
+      "--socket=$master->[0]->{'path_sock'} --password= ";
 
     if ( $opt_debug )
    {

mysql-test/r/mysqlslap.result

@@ -143,3 +143,27 @@ select * from t1;
 select * from t2;
 select * from t1;
 DROP SCHEMA IF EXISTS `mysqlslap`;
+DROP SCHEMA IF EXISTS `mysqlslap`;
+CREATE SCHEMA `mysqlslap`;
+use mysqlslap;
+set storage_engine=`heap`;
+CREATE TABLE t1 (id int, name varchar(64));
+create table t2(foo1 varchar(32), foo2 varchar(32));
+INSERT INTO t1 VALUES (1, 'This is a test');
+insert into t2 values ('test', 'test2');
+SHOW TABLES;
+select * from t1;
+SHOW TABLES;
+DROP SCHEMA IF EXISTS `mysqlslap`;
+DROP SCHEMA IF EXISTS `mysqlslap`;
+CREATE SCHEMA `mysqlslap`;
+use mysqlslap;
+set storage_engine=`myisam`;
+CREATE TABLE t1 (id int, name varchar(64));
+create table t2(foo1 varchar(32), foo2 varchar(32));
+INSERT INTO t1 VALUES (1, 'This is a test');
+insert into t2 values ('test', 'test2');
+SHOW TABLES;
+select * from t1;
+SHOW TABLES;
+DROP SCHEMA IF EXISTS `mysqlslap`;

mysql-test/t/mysqlslap.test

@@ -4,7 +4,7 @@
 
 --exec $MYSQL_SLAP --silent --concurrency=5 --iterations=20 --number-int-cols=2 --number-char-cols=3 --auto-generate-sql
 
---exec $MYSQL_SLAP --silent --concurrency=5 --iterations=20 --number-int-cols=2 --number-char-cols=3 --auto-generate-sql --use-threads
+--exec $MYSQL_SLAP --silent --concurrency=5 --iterations=20 --number-int-cols=2 --number-char-cols=3 --auto-generate-sql
 
 --exec $MYSQL_SLAP --only-print --iterations=20  --query="select * from t1" --create="CREATE TABLE t1 (id int, name varchar(64)); INSERT INTO t1 VALUES (1, 'This is a test')" --delimiter=";"
 --exec $MYSQL_SLAP --silent --concurrency=5 --iterations=20 --query="select * from t1" --create="CREATE TABLE t1 (id int, name varchar(64)); INSERT INTO t1 VALUES (1, 'This is a test')" --delimiter=";"
@@ -14,3 +14,25 @@
 --exec $MYSQL_SLAP --silent --concurrency=5 --iterations=20 --delimiter=";" --query="select * from t1;select * from t2" --create="CREATE TABLE t1 (id int, name varchar(64)); create table t2(foo1 varchar(32), foo2 varchar(32)); INSERT INTO t1 VALUES (1, 'This is a test'); insert into t2 values ('test', 'test2')"
 
 --exec $MYSQL_SLAP --silent --concurrency=5 --iterations=20 --number-int-cols=2 --number-char-cols=3 --auto-generate-sql --create-schema=test_env
+
+--exec $MYSQL_SLAP --silent --concurrency=5 --iterations=20 --number-int-cols=2 --number-char-cols=3 --auto-generate-sql --create-schema=test_env --auto-generate-sql-add-autoincrement 
+
+--exec $MYSQL_SLAP --silent --concurrency=5 --iterations=1 --number-int-cols=2 --number-char-cols=3 --auto-generate-sql --auto-generate-sql-add-autoincrement 
+
+--exec $MYSQL_SLAP --silent --concurrency=5 --iterations=1 --number-int-cols=2 --number-char-cols=3 --auto-generate-sql --auto-generate-sql-add-autoincrement --auto-generate-sql-load-type=update
+
+--exec $MYSQL_SLAP --silent --concurrency=5 --iterations=1 --number-int-cols=2 --number-char-cols=3 --auto-generate-sql --auto-generate-sql-add-autoincrement --auto-generate-sql-load-type=read
+
+--exec $MYSQL_SLAP --silent --concurrency=5 --iterations=1 --number-int-cols=2 --number-char-cols=3 --auto-generate-sql --auto-generate-sql-add-autoincrement --auto-generate-sql-load-type=write
+
+--exec $MYSQL_SLAP --silent --concurrency=5 --iterations=1 --number-int-cols=2 --number-char-cols=3 --auto-generate-sql --auto-generate-sql-add-autoincrement --auto-generate-sql-load-type=mixed
+
+--exec $MYSQL_SLAP --silent --concurrency=5 --iterations=1 --number-int-cols=2 --number-char-cols=3 --auto-generate-sql --auto-generate-sql-guid-primary --auto-generate-sql-load-type=update
+
+--exec $MYSQL_SLAP --silent --concurrency=5 --iterations=1 --number-int-cols=2 --number-char-cols=3 --auto-generate-sql --auto-generate-sql-guid-primary --auto-generate-sql-load-type=update --auto-generate-sql-execute-number=5
+
+--exec $MYSQL_SLAP --silent --concurrency=5 --iterations=1 --number-int-cols=2 --number-char-cols=3 --auto-generate-sql --auto-generate-sql-guid-primary --auto-generate-sql-load-type=key --auto-generate-sql-execute-number=5
+
+--exec $MYSQL_SLAP --silent --concurrency=5 --iterations=1 --number-int-cols=2 --number-char-cols=3 --auto-generate-sql --auto-generate-sql-guid-primary --auto-generate-sql-load-type=key --auto-generate-sql-execute-number=5 --auto-generate-sql-secondary-indexes=3
+
+--exec $MYSQL_SLAP --only-print --delimiter=";" --query="select * from t1;select * from t2" --create="CREATE TABLE t1 (id int, name varchar(64)); create table t2(foo1 varchar(32), foo2 varchar(32)); INSERT INTO t1 VALUES (1, 'This is a test'); insert into t2 values ('test', 'test2')" --engine="heap,myisam" --post-query="SHOW TABLES" --pre-query="SHOW TABLES";

sql/authors.h

@@ -66,6 +66,7 @@ struct show_table_authors_st show_table_authors[]= {
     "Parser, port to OS/2, storage engines and some random stuff" },
   { "Yuri Dario", "", "OS/2 port" },
   { "Andrei Elkin", "Espoo, Finland", "Replication" },
+  { "Patrick Galbraith", "Sharon, NH", "Federated Engine, mysqlslap" },
   { "Sergei Golubchik", "Kerpen, Germany",
     "Full-text search, precision math" },
   { "Lenz Grimmer", "Hamburg, Germany",

storage/archive/archive_test.c

@@ -217,14 +217,13 @@ int main(int argc, char *argv[])
 
   azclose(&writer_handle);
   azclose(&reader_handle);
-  exit(0);
   unlink(TEST_FILENAME);
 
   /* Start size tests */
   printf("About to run 2/4/8 gig tests now, you may want to hit CTRL-C\n");
-  size_test(TWOGIG, 2097152L);
-  size_test(FOURGIG, 4194304L);
-  size_test(EIGHTGIG, 8388608L);
+  size_test(TWOGIG, 2088992L);
+  size_test(FOURGIG, 4177984L);
+  size_test(EIGHTGIG, 8355968L);
 
   return 0;
 }
@@ -234,6 +233,7 @@ int size_test(unsigned long long length, unsigned long long rows_to_test_for)
   azio_stream writer_handle, reader_handle;
   unsigned long long write_length;
   unsigned long long read_length= 0;
+  unsigned long long count;
   unsigned int ret;
   char buffer[BUFFER_LEN];
   int error;
@@ -244,8 +244,10 @@ int size_test(unsigned long long length, unsigned long long rows_to_test_for)
     return 0;
   }
 
-  for (write_length= 0; write_length < length ; write_length+= ret)
+  for (count= 0, write_length= 0; write_length < length ; 
+       write_length+= ret)
   {
+    count++;
     ret= azwrite(&writer_handle, test_string, BUFFER_LEN);
     if (ret != BUFFER_LEN)
     {
@@ -257,7 +259,7 @@ int size_test(unsigned long long length, unsigned long long rows_to_test_for)
       azflush(&writer_handle,  Z_SYNC_FLUSH);
     }
   }
-  assert(write_length == length);
+  assert(write_length != count * BUFFER_LEN); /* Number of rows time BUFFER_LEN */
   azflush(&writer_handle,  Z_SYNC_FLUSH);
 
   printf("Reading back data\n");
@@ -279,7 +281,7 @@ int size_test(unsigned long long length, unsigned long long rows_to_test_for)
     }
   }
 
-  assert(read_length == length);
+  assert(read_length == write_length);
   assert(writer_handle.rows == rows_to_test_for);
   azclose(&writer_handle);
   azclose(&reader_handle);

storage/archive/azio.c

@@ -55,8 +55,8 @@ int az_open (azio_stream *s, const char *path, int Flags, File fd)
   s->stream.zalloc = (alloc_func)0;
   s->stream.zfree = (free_func)0;
   s->stream.opaque = (voidpf)0;
-  memset(s->inbuf, 0, AZ_BUFSIZE);
-  memset(s->outbuf, 0, AZ_BUFSIZE);
+  memset(s->inbuf, 0, AZ_BUFSIZE_READ);
+  memset(s->outbuf, 0, AZ_BUFSIZE_WRITE);
   s->stream.next_in = s->inbuf;
   s->stream.next_out = s->outbuf;
   s->stream.avail_in = s->stream.avail_out = 0;
@@ -109,7 +109,7 @@ int az_open (azio_stream *s, const char *path, int Flags, File fd)
       return Z_NULL;
     }
   }
-  s->stream.avail_out = AZ_BUFSIZE;
+  s->stream.avail_out = AZ_BUFSIZE_WRITE;
 
   errno = 0;
   s->file = fd < 0 ? my_open(path, Flags, MYF(0)) : fd;
@@ -159,7 +159,7 @@ void write_header(azio_stream *s)
   char buffer[AZHEADER_SIZE + AZMETA_BUFFER_SIZE];
   char *ptr= buffer;
 
-  s->block_size= AZ_BUFSIZE;
+  s->block_size= AZ_BUFSIZE_WRITE;
   s->version = (unsigned char)az_magic[1];
   s->minor_version = (unsigned char)az_magic[2];
 
@@ -224,7 +224,7 @@ int get_byte(s)
   if (s->stream.avail_in == 0) 
   {
     errno = 0;
-    s->stream.avail_in = my_read(s->file, (byte *)s->inbuf, AZ_BUFSIZE, MYF(0));
+    s->stream.avail_in = my_read(s->file, (byte *)s->inbuf, AZ_BUFSIZE_READ, MYF(0));
     if (s->stream.avail_in == 0) 
     {
       s->z_eof = 1;
@@ -260,7 +260,7 @@ void check_header(azio_stream *s)
   if (len < 2) {
     if (len) s->inbuf[0] = s->stream.next_in[0];
     errno = 0;
-    len = (uInt)my_read(s->file, (byte *)s->inbuf + len, AZ_BUFSIZE >> len, MYF(0));
+    len = (uInt)my_read(s->file, (byte *)s->inbuf + len, AZ_BUFSIZE_READ >> len, MYF(0));
     if (len == 0) s->z_err = Z_ERRNO;
     s->stream.avail_in += len;
     s->stream.next_in = s->inbuf;
@@ -455,7 +455,7 @@ unsigned int ZEXPORT azread ( azio_stream *s, voidp buf, unsigned int len, int *
     if (s->stream.avail_in == 0 && !s->z_eof) {
 
       errno = 0;
-      s->stream.avail_in = (uInt)my_read(s->file, (byte *)s->inbuf, AZ_BUFSIZE, MYF(0));
+      s->stream.avail_in = (uInt)my_read(s->file, (byte *)s->inbuf, AZ_BUFSIZE_READ, MYF(0));
       if (s->stream.avail_in == 0) 
       {
         s->z_eof = 1;
@@ -522,12 +522,13 @@ unsigned int azwrite (azio_stream *s, voidpc buf, unsigned int len)
     {
 
       s->stream.next_out = s->outbuf;
-      if (my_write(s->file, (byte *)s->outbuf, AZ_BUFSIZE, MYF(0)) != AZ_BUFSIZE) 
+      if (my_write(s->file, (byte *)s->outbuf, AZ_BUFSIZE_WRITE, 
+                   MYF(0)) != AZ_BUFSIZE_WRITE) 
       {
         s->z_err = Z_ERRNO;
         break;
       }
-      s->stream.avail_out = AZ_BUFSIZE;
+      s->stream.avail_out = AZ_BUFSIZE_WRITE;
     }
     s->in += s->stream.avail_in;
     s->out += s->stream.avail_out;
@@ -563,7 +564,7 @@ int do_flush (azio_stream *s, int flush)
 
   for (;;) 
   {
-    len = AZ_BUFSIZE - s->stream.avail_out;
+    len = AZ_BUFSIZE_WRITE - s->stream.avail_out;
 
     if (len != 0) 
     {
@@ -574,7 +575,7 @@ int do_flush (azio_stream *s, int flush)
         return Z_ERRNO;
       }
       s->stream.next_out = s->outbuf;
-      s->stream.avail_out = AZ_BUFSIZE;
+      s->stream.avail_out = AZ_BUFSIZE_WRITE;
     }
     if (done) break;
     s->out += s->stream.avail_out;
@@ -675,8 +676,8 @@ my_off_t azseek (s, offset, whence)
     /* There was a zmemzero here if inbuf was null -Brian */
     while (offset > 0)  
     {
-      uInt size = AZ_BUFSIZE;
-      if (offset < AZ_BUFSIZE) size = (uInt)offset;
+      uInt size = AZ_BUFSIZE_WRITE;
+      if (offset < AZ_BUFSIZE_WRITE) size = (uInt)offset;
 
       size = azwrite(s, s->inbuf, size);
       if (size == 0) return -1L;
@@ -719,8 +720,8 @@ my_off_t azseek (s, offset, whence)
   }
   while (offset > 0)  {
     int error;
-    unsigned int size = AZ_BUFSIZE;
-    if (offset < AZ_BUFSIZE) size = (int)offset;
+    unsigned int size = AZ_BUFSIZE_READ;
+    if (offset < AZ_BUFSIZE_READ) size = (int)offset;
 
     size = azread(s, s->outbuf, size, &error);
     if (error <= 0) return -1L;

storage/archive/azlib.h

@@ -196,7 +196,8 @@ extern "C" {
 /* The deflate compression method (the only one supported in this version) */
 
 #define Z_NULL  0  /* for initializing zalloc, zfree, opaque */
-#define AZ_BUFSIZE 16384
+#define AZ_BUFSIZE_READ 32768
+#define AZ_BUFSIZE_WRITE 16384
 
 
 typedef struct azio_stream {
@@ -204,8 +205,8 @@ typedef struct azio_stream {
   int      z_err;   /* error code for last stream operation */
   int      z_eof;   /* set if end of input file */
   File     file;   /* .gz file */
-  Byte     inbuf[AZ_BUFSIZE];  /* input buffer */
-  Byte     outbuf[AZ_BUFSIZE]; /* output buffer */
+  Byte     inbuf[AZ_BUFSIZE_READ];  /* input buffer */
+  Byte     outbuf[AZ_BUFSIZE_WRITE]; /* output buffer */
   uLong    crc;     /* crc32 of uncompressed data */
   char     *msg;    /* error message */
   int      transparent; /* 1 if input file is not a .gz file */

storage/archive/ha_archive.cc

@@ -81,6 +81,7 @@
 
   TODO:
    Allow users to set compression level.
+   Allow adjustable block size.
    Implement versioning, should be easy.
    Allow for errors, find a way to mark bad rows.
    Add optional feature so that rows can be flushed at interval (which will cause less
@@ -210,7 +211,8 @@ ha_archive::ha_archive(handlerton *hton, TABLE_SHARE *table_arg)
   buffer.set((char *)byte_buffer, IO_SIZE, system_charset_info);
 
   /* The size of the offset value we will use for position() */
-  ref_length = sizeof(my_off_t);
+  ref_length= sizeof(my_off_t);
+  archive_reader_open= FALSE;
 }
 
 int archive_discover(handlerton *hton, THD* thd, const char *db, 
@@ -434,6 +436,29 @@ int ha_archive::init_archive_writer()
 }
 
 
+int ha_archive::init_archive_reader()
+{
+  DBUG_ENTER("ha_archive::init_archive_reader");
+  /* 
+    It is expensive to open and close the data files and since you can't have
+    a gzip file that can be both read and written we keep a writer open
+    that is shared amoung all open tables.
+  */
+  if (!archive_reader_open)
+  {
+    if (!(azopen(&archive, share->data_file_name, O_RDONLY|O_BINARY)))
+    {
+      DBUG_PRINT("ha_archive", ("Could not open archive read file"));
+      share->crashed= TRUE;
+      DBUG_RETURN(1);
+    }
+    archive_reader_open= TRUE;
+  }
+
+  DBUG_RETURN(0);
+}
+
+
 /*
   We just implement one additional file extension.
 */
@@ -477,7 +502,6 @@ int ha_archive::open(const char *name, int mode, uint open_options)
 
   DBUG_ASSERT(share);
 
-
   record_buffer= create_record_buffer(table->s->reclength + 
                                       ARCHIVE_ROW_HEADER_SIZE);
 
@@ -489,14 +513,6 @@ int ha_archive::open(const char *name, int mode, uint open_options)
 
   thr_lock_data_init(&share->lock, &lock, NULL);
 
-  DBUG_PRINT("ha_archive", ("archive data_file_name %s", share->data_file_name));
-  if (!(azopen(&archive, share->data_file_name, O_RDONLY|O_BINARY)))
-  {
-    if (errno == EROFS || errno == EACCES)
-      DBUG_RETURN(my_errno= errno);
-    DBUG_RETURN(HA_ERR_CRASHED_ON_USAGE);
-  }
-
   DBUG_PRINT("ha_archive", ("archive table was crashed %s", 
                       rc == HA_ERR_CRASHED_ON_USAGE ? "yes" : "no"));
   if (rc == HA_ERR_CRASHED_ON_USAGE && open_options & HA_OPEN_FOR_REPAIR)
@@ -533,8 +549,11 @@ int ha_archive::close(void)
   destroy_record_buffer(record_buffer);
 
   /* First close stream */
-  if (azclose(&archive))
-    rc= 1;
+  if (archive_reader_open)
+  {
+    if (azclose(&archive))
+      rc= 1;
+  }
   /* then also close share */
   rc|= free_share();
 
@@ -904,7 +923,7 @@ int ha_archive::index_read(byte *buf, const byte *key,
 int ha_archive::index_read_idx(byte *buf, uint index, const byte *key,
                                  uint key_len, enum ha_rkey_function find_flag)
 {
-  int rc= 0;
+  int rc;
   bool found= 0;
   KEY *mkey= &table->s->key_info[index];
   current_k_offset= mkey->key_part->offset;
@@ -914,22 +933,10 @@ int ha_archive::index_read_idx(byte *buf, uint index, const byte *key,
 
   DBUG_ENTER("ha_archive::index_read_idx");
 
-  /* 
-    All of the buffer must be written out or we won't see all of the
-    data 
-  */
-  pthread_mutex_lock(&share->mutex);
-  azflush(&(share->archive_write), Z_SYNC_FLUSH);
-  pthread_mutex_unlock(&share->mutex);
+  rc= rnd_init(TRUE);
 
-  /*
-    Set the position of the local read thread to the beginning postion.
-  */
-  if (read_data_header(&archive))
-  {
-    rc= HA_ERR_CRASHED_ON_USAGE;
+  if (rc)
     goto error;
-  }
 
   while (!(get_row(&archive, buf)))
   {
@@ -979,10 +986,11 @@ int ha_archive::rnd_init(bool scan)
   if (share->crashed)
       DBUG_RETURN(HA_ERR_CRASHED_ON_USAGE);
 
+  init_archive_reader();
+
   /* We rewind the file so that we can read from the beginning if scan */
   if (scan)
   {
-    scan_rows= share->rows_recorded;
     DBUG_PRINT("info", ("archive will retrieve %llu rows", 
                         (unsigned long long) scan_rows));
     stats.records= 0;
@@ -991,17 +999,18 @@ int ha_archive::rnd_init(bool scan)
       If dirty, we lock, and then reset/flush the data.
       I found that just calling azflush() doesn't always work.
     */
+    pthread_mutex_lock(&share->mutex);
+    scan_rows= share->rows_recorded;
     if (share->dirty == TRUE)
     {
-      pthread_mutex_lock(&share->mutex);
       if (share->dirty == TRUE)
       {
         DBUG_PRINT("ha_archive", ("archive flushing out rows for scan"));
         azflush(&(share->archive_write), Z_SYNC_FLUSH);
         share->dirty= FALSE;
       }
-      pthread_mutex_unlock(&share->mutex);
     }
+    pthread_mutex_unlock(&share->mutex);
 
     if (read_data_header(&archive))
       DBUG_RETURN(HA_ERR_CRASHED_ON_USAGE);
@@ -1283,6 +1292,8 @@ int ha_archive::optimize(THD* thd, HA_CHECK_OPT* check_opt)
   azio_stream writer;
   char writer_filename[FN_REFLEN];
 
+  init_archive_reader();
+
   // now we close both our writer and our reader for the rename
   if (share->archive_write_open)
   {
@@ -1475,6 +1486,7 @@ int ha_archive::info(uint flag)
 
   if (flag & HA_STATUS_AUTO)
   {
+    init_archive_reader();
     azflush(&archive, Z_SYNC_FLUSH);
     stats.auto_increment_value= archive.auto_increment;
   }
@@ -1557,6 +1569,8 @@ int ha_archive::check(THD* thd, HA_CHECK_OPT* check_opt)
     Now we will rewind the archive file so that we are positioned at the 
     start of the file.
   */
+  init_archive_reader();
+
   if (!rc)
     read_data_header(&archive);
 

storage/archive/ha_archive.h

@@ -71,6 +71,7 @@ class ha_archive: public handler
   uint current_key_len;
   uint current_k_offset;
   archive_record_buffer *record_buffer;
+  bool archive_reader_open;
 
   archive_record_buffer *create_record_buffer(unsigned int length);
   void destroy_record_buffer(archive_record_buffer *r);
@@ -119,6 +120,7 @@ class ha_archive: public handler
   ARCHIVE_SHARE *get_share(const char *table_name, int *rc);
   int free_share();
   int init_archive_writer();
+  int init_archive_reader();
   bool auto_repair() const { return 1; } // For the moment we just do this
   int read_data_header(azio_stream *file_to_read);
   void position(const byte *record);