Logging improvements. Mostly fixes #27. Addresses #455, #27.

git-svn-id: file:///svn/tokudb@2471 c7de825b-a66e-492c-adef-691d508d4ae1

newbrt/Makefile

@@ -151,7 +151,7 @@ brt.o: $(BRT_INTERNAL_H_INCLUDES) key.h log_header.h
 fifo.o: fifo.h brttypes.h 
 memory.o: memory.h
 primes.o: primes.h toku_assert.h
-fifo-test: fifo.o memory.o toku_assert.o
+fifo-test: fifo.o memory.o toku_assert.o ybt.o
 brt-serialize.o: $(BRT_INTERNAL_H_INCLUDES) key.h wbuf.h rbuf.h
 brt-bigtest: memory.o ybt.o brt.o pma.o cachetable.o key.o fifo.o brt-serialize.o
 brt-bigtest.o: brt.h ../include/db.h

newbrt/brt-internal.h

@@ -144,28 +144,6 @@ void toku_brtnode_free (BRTNODE *node);
 #define DEADBEEF ((void*)0xDEADBEEFDEADBEEF)
 #endif
 
-/* tree command types */
-enum brt_cmd_type {
-    BRT_NONE = 0,
-    BRT_INSERT = 1,
-    BRT_DELETE = 2,
-    BRT_DELETE_BOTH = 3,
-};
-
-/* tree commands */
-struct brt_cmd {
-    enum brt_cmd_type type;
-    TXNID xid;
-    union {
-        /* insert or delete */
-        struct brt_cmd_insert_delete {
-            DBT *key;
-            DBT *val;
-        } id;
-    } u;
-};
-typedef struct brt_cmd BRT_CMD_S, *BRT_CMD;
-
 struct brtenv {
     CACHETABLE ct;
     TOKULOGGER logger;

newbrt/brttypes.h

@@ -9,6 +9,8 @@
 #endif
 #define _FILE_OFFSET_BITS 64
 
+#include "../include/db.h"
+
 typedef struct brt *BRT;
 struct brt_header;
 struct wbuf;
@@ -68,4 +70,26 @@ typedef struct intpairarray {
 typedef struct cachetable *CACHETABLE;
 typedef struct cachefile *CACHEFILE;
 
+/* tree command types */
+enum brt_cmd_type {
+    BRT_NONE = 0,
+    BRT_INSERT = 1,
+    BRT_DELETE = 2,
+    BRT_DELETE_BOTH = 3,
+};
+
+/* tree commands */
+struct brt_cmd {
+    enum brt_cmd_type type;
+    TXNID xid;
+    union {
+        /* insert or delete */
+        struct brt_cmd_insert_delete {
+            DBT *key;
+            DBT *val;
+        } id;
+    } u;
+};
+typedef struct brt_cmd BRT_CMD_S, *BRT_CMD;
+
 #endif

newbrt/cachetable.c

@@ -106,6 +106,7 @@ int toku_cachefile_of_filenum (CACHETABLE t, FILENUM filenum, CACHEFILE *cf, BRT
     return ENOENT;
 }
 
+// If something goes wrong, close the fd.  After this, the caller shouldn't close the fd, but instead should close the cachefile.
 int toku_cachetable_openfd (CACHEFILE *cf, CACHETABLE t, int fd, BRT brt) {
     int r;
     CACHEFILE extant;
@@ -114,7 +115,7 @@ int toku_cachetable_openfd (CACHEFILE *cf, CACHETABLE t, int fd, BRT brt) {
     struct fileid fileid;
     memset(&fileid, 0, sizeof(fileid));
     r=fstat(fd, &statbuf);
-    if (r != 0) return errno;
+    if (r != 0) { r=errno; close(fd); }
     fileid.st_dev = statbuf.st_dev;
     fileid.st_ino = statbuf.st_ino;
     for (extant = t->cachefiles; extant; extant=extant->next) {

newbrt/fifo.c

@@ -5,6 +5,7 @@
 #include "toku_assert.h"
 #include "memory.h"
 #include "fifo.h"
+#include "ybt.h"
 
 static void fifo_init(struct fifo *fifo) {
     fifo->head = fifo->tail = 0;
@@ -78,6 +79,10 @@ int toku_fifo_enq(FIFO fifo, const void *key, unsigned int keylen, const void *d
     return 0;
 }
 
+int toku_fifo_enq_cmdstruct (FIFO fifo, const BRT_CMD cmd) {
+    return toku_fifo_enq(fifo, cmd->u.id.key->data, cmd->u.id.key->size, cmd->u.id.val->data, cmd->u.id.val->size, cmd->type, cmd->xid);
+}
+
 /* peek at the head (the oldest entry) of the fifo */
 int toku_fifo_peek(FIFO fifo, bytevec *key, unsigned int *keylen, bytevec *data, unsigned int *datalen, int *type, TXNID *xid) {
     struct fifo_entry *entry = fifo_peek(fifo);
@@ -91,6 +96,22 @@ int toku_fifo_peek(FIFO fifo, bytevec *key, unsigned int *keylen, bytevec *data,
     return 0;
 }
 
+// fill in the BRT_CMD, using the two DBTs for the DBT part.
+int toku_fifo_peek_cmdstruct (FIFO fifo, BRT_CMD cmd, DBT*key, DBT*data) {
+    int type;
+    bytevec keyb,datab;
+    unsigned int keylen,datalen;
+    int r = toku_fifo_peek(fifo, &keyb, &keylen, &datab, &datalen, &type, &cmd->xid);
+    if (r!=0) return r;
+    cmd->type=type;
+    toku_fill_dbt(key, keyb, keylen);
+    toku_fill_dbt(data, datab, datalen);
+    cmd->u.id.key=key;
+    cmd->u.id.val=data;
+    return 0;
+}
+
+
 int toku_fifo_deq(FIFO fifo) {
     struct fifo_entry *entry = fifo_deq(fifo);
     if (entry == 0) return -1; // if entry is 0 then it was an empty fifo

newbrt/fifo.h

+#ifndef FIFO_H
+#define FIFO_H
 #include "brttypes.h"
 
 struct fifo_entry {
@@ -19,8 +21,10 @@ typedef struct fifo *FIFO;
 int toku_fifo_create(FIFO *);
 void toku_fifo_free(FIFO *);
 int toku_fifo_n_entries(FIFO);
+int toku_fifo_enq_cmdstruct (FIFO fifo, const BRT_CMD cmd);
 int toku_fifo_enq (FIFO, const void *key, ITEMLEN keylen, const void *data, ITEMLEN datalen, int type, TXNID xid);
 int toku_fifo_peek (FIFO, bytevec *key, ITEMLEN *keylen, bytevec *data, ITEMLEN *datalen, int *type, TXNID *xid);
+int toku_fifo_peek_cmdstruct (FIFO, BRT_CMD, DBT*, DBT*); // fill in the BRT_CMD, using the two DBTs for the DBT part.
 int toku_fifo_deq(FIFO);
 int toku_fifo_peek_deq (FIFO, bytevec *key, ITEMLEN *keylen, bytevec *data, ITEMLEN *datalen, int *type);
 void toku_fifo_iterate (FIFO, void(*f)(bytevec key,ITEMLEN keylen,bytevec data,ITEMLEN datalen,int type, TXNID xid, void*), void*);
@@ -38,3 +42,4 @@ void toku_fifo_iterate (FIFO, void(*f)(bytevec key,ITEMLEN keylen,bytevec data,I
             } \
         })
 
+#endif

newbrt/log.c

@@ -633,5 +633,7 @@ int toku_txnid2txn (TOKULOGGER logger, TXNID txnid, TOKUTXN *result) {
 	    return 0;
 	}
     }
-    return -1;
+    // If there is no txn, then we treat it as the null txn.
+    *result = 0;
+    return 0;
 }

newbrt/logformat.c

@@ -54,11 +54,13 @@ const struct logtype rollbacks[] = {
 
 const struct logtype logtypes[] = {
     {"commit", 'C', FA{{"TXNID", "txnid", 0},NULLFIELD}},
-    {"delete", 'D', FA{{"FILENUM", "filenum", 0},
+#if 0
+    {"tl_delete", 'D', FA{{"FILENUM", "filenum", 0}, // tl logentries can be used, by themselves, to rebuild the whole DB from scratch.
 		       {"DISKOFF", "diskoff", 0},
 		       {"BYTESTRING", "key", 0},
 		       {"BYTESTRING", "data", 0},
 		       NULLFIELD}},
+#endif
     {"fcreate", 'F', FA{{"TXNID",      "txnid", 0},
 			{"BYTESTRING", "fname", 0},
 			{"u_int32_t",  "mode",  "0%o"},

newbrt/pma.c

@@ -717,10 +717,12 @@ int toku_pma_insert (PMA pma, DBT *k, DBT *v, TOKULOGGER logger, TXNID xid, FILE
     *fingerprint += rand4fingerprint*toku_calccrc32_kvpair(k->data, k->size, v->data, v->size); 
 
     struct kv_pair *pair = pma->pairs[idx];
+    if (logger) {
 	{
 	    TOKUTXN txn;
 	    int r;
 	    if ((r=toku_txnid2txn(logger, xid, &txn))) return r;
+	    if (txn) {
 		const BYTESTRING key  = { pair->keylen, toku_memdup(kv_pair_key_const(pair), pair->keylen) };
 		const BYTESTRING data = { pair->vallen, toku_memdup(kv_pair_val_const(pair), pair->vallen) };
 		if ((r = toku_logger_save_rollback_insertatleaf(txn, pma->filenum, key, data))) {
@@ -728,12 +730,14 @@ int toku_pma_insert (PMA pma, DBT *k, DBT *v, TOKULOGGER logger, TXNID xid, FILE
 		    return r;
 		}
 	    }
+	}
 	{
 	    const BYTESTRING key  = { pair->keylen, kv_pair_key(pair) };
 	    const BYTESTRING data = { pair->vallen, kv_pair_val(pair) };
 	    int r = toku_log_insertinleaf (logger, xid, pma->filenum, diskoff, idx, key, data);
 	    if (r!=0) return r;
-	if (logger && node_lsn) *node_lsn = toku_logger_last_lsn(logger);
+	    if (node_lsn) *node_lsn = toku_logger_last_lsn(logger);
+	}
     }
 
     return 0;
@@ -773,12 +777,15 @@ static int pma_log_delete (PMA pma, const char *key, int keylen, const char *val
     }
     if (logger) {
 	TOKUTXN txn;
-	if (0!=toku_txnid2txn(logger, xid, &txn)) return -1;
+	int r=toku_txnid2txn(logger, xid, &txn);
+	if (r!=0) return r;
+	if (txn) {
 	    const BYTESTRING deletedkey  = { keylen, toku_memdup(key, keylen) };
 	    const BYTESTRING deleteddata = { vallen, toku_memdup(val, vallen) };
-	int r=toku_logger_save_rollback_deleteatleaf(txn, pma->filenum, deletedkey, deleteddata);
+	    r=toku_logger_save_rollback_deleteatleaf(txn, pma->filenum, deletedkey, deleteddata);
 	    if (r!=0) { toku_free(deletedkey.data); toku_free(deleteddata.data); return r;
 	    }
+	}
         if (node_lsn) *node_lsn = toku_logger_last_lsn(logger);
     }
     return 0;
@@ -926,6 +933,7 @@ int toku_pma_insert_or_replace (PMA pma, DBT *k, DBT *v,
 	{
 	    TOKUTXN txn;
 	    if ((r=toku_txnid2txn(logger, xid, &txn))) return r;
+	    if (txn) {
 		const BYTESTRING key  = { k->size, toku_memdup(k->data, k->size) };
 		const BYTESTRING data = { v->size, toku_memdup(v->data, v->size) };
 		if ((r = toku_logger_save_rollback_insertatleaf(txn, pma->filenum, key, data))) {
@@ -933,6 +941,7 @@ int toku_pma_insert_or_replace (PMA pma, DBT *k, DBT *v,
 		    return r;
 		}
 	    }
+	}
 	{
 	    const BYTESTRING key  = { k->size, k->data };
 	    const BYTESTRING data = { v->size, v->data };

newbrt/roll.c

@@ -96,8 +96,6 @@ void toku_recover_commit (LSN UU(lsn), TXNID UU(txnid)) {
 
 #define ABORTIT { le=le; txn=txn; fprintf(stderr, "%s:%d (%s) not ready to go\n", __FILE__, __LINE__, __func__); abort(); }
 
-void toku_recover_delete (LSN UU(lsn), FILENUM UU(filenum),DISKOFF UU(diskoff),BYTESTRING UU(key),BYTESTRING UU(data)) { assert(0); }
-
 void toku_recover_fcreate (LSN UU(lsn), TXNID UU(txnid),BYTESTRING fname,u_int32_t mode) {
     char *fixed_fname = fixup_fname(&fname);
     int fd = creat(fixed_fname, mode);