handle read/write crash concurrently

include/util/tfile.h

@@ -38,6 +38,7 @@ int64_t tfOpenCreateWriteAppend(const char *pathname);
 int64_t tfClose(int64_t tfd);
 int64_t tfWrite(int64_t tfd, void *buf, int64_t count);
 int64_t tfRead(int64_t tfd, void *buf, int64_t count);
+int64_t tfPread(int64_t tfd, void *buf, int64_t count, int64_t offset);
 int32_t tfFsync(int64_t tfd);
 bool    tfValid(int64_t tfd);
 int64_t tfLseek(int64_t tfd, int64_t offset, int32_t whence);

source/libs/index/src/index.c

@@ -459,7 +459,7 @@ void iterateValueDestroy(IterateValue* value, bool destroy) {
   } else {
     if (value->val != NULL) { taosArrayClear(value->val); }
   }
-  free(value->colVal);
+  // free(value->colVal);
   value->colVal = NULL;
 }
 static int indexGenTFile(SIndex* sIdx, IndexCache* cache, SArray* batch) {

source/libs/index/src/index_fst.c

@@ -1033,15 +1033,17 @@ FstStreamWithStateBuilder* fstSearchWithState(Fst* fst, AutomationCtx* ctx) {
 }
 
 FstNode* fstGetRoot(Fst* fst) {
-  // pthread_mutex_lock(&fst->mtx);
-  if (fst->root != NULL) {
-    // pthread_mutex_unlock(&fst->mtx);
-    return fst->root;
-  }
   CompiledAddr rAddr = fstGetRootAddr(fst);
-  fst->root = fstGetNode(fst, rAddr);
-  // pthread_mutex_unlock(&fst->mtx);
-  return fst->root;
+  return fstGetNode(fst, rAddr);
+  // pthread_mutex_lock(&fst->mtx);
+  // if (fst->root != NULL) {
+  //  // pthread_mutex_unlock(&fst->mtx);
+  //  return fst->root;
+  //}
+  // CompiledAddr rAddr = fstGetRootAddr(fst);
+  // fst->root = fstGetNode(fst, rAddr);
+  //// pthread_mutex_unlock(&fst->mtx);
+  // return fst->root;
 }
 
 FstNode* fstGetNode(Fst* fst, CompiledAddr addr) {

source/libs/index/src/index_fst_counting_writer.c

@@ -42,8 +42,8 @@ static int writeCtxDoRead(WriterCtx* ctx, uint8_t* buf, int len) {
 static int writeCtxDoReadFrom(WriterCtx* ctx, uint8_t* buf, int len, int32_t offset) {
   int nRead = 0;
   if (ctx->type == TFile) {
-    tfLseek(ctx->file.fd, offset, 0);
-    nRead = tfRead(ctx->file.fd, buf, len);
+    // tfLseek(ctx->file.fd, offset, 0);
+    nRead = tfPread(ctx->file.fd, buf, len, offset);
   } else {
     // refactor later
     assert(0);
@@ -52,6 +52,7 @@ static int writeCtxDoReadFrom(WriterCtx* ctx, uint8_t* buf, int len, int32_t off
 }
 static int writeCtxDoFlush(WriterCtx* ctx) {
   if (ctx->type == TFile) {
+    // taosFsyncFile(ctx->file.fd);
     tfFsync(ctx->file.fd);
     // tfFlush(ctx->file.fd);
   } else {
@@ -69,13 +70,15 @@ WriterCtx* writerCtxCreate(WriterType type, const char* path, bool readOnly, int
     // ugly code, refactor later
     ctx->file.readOnly = readOnly;
     if (readOnly == false) {
+      // ctx->file.fd = open(path, O_WRONLY | O_CREAT | O_APPEND, S_IRWXU | S_IRWXG | S_IRWXO);
       ctx->file.fd = tfOpenCreateWriteAppend(path);
     } else {
-      ctx->file.fd = tfOpenReadWrite(path);
+      // ctx->file.fd = open(path, O_RDONLY, S_IRWXU | S_IRWXG | S_IRWXO);
+      ctx->file.fd = tfOpenRead(path);
     }
     memcpy(ctx->file.buf, path, strlen(path));
     if (ctx->file.fd < 0) {
-      indexError("open file error %d", errno);
+      indexError("failed to open file, error %d", errno);
       goto END;
     }
   } else if (ctx->type == TMemory) {
@@ -101,10 +104,7 @@ void writerCtxDestroy(WriterCtx* ctx, bool remove) {
     free(ctx->mem.buf);
   } else {
     tfClose(ctx->file.fd);
-    if (remove) {
-      indexError("rm file %s", ctx->file.buf);
-      unlink(ctx->file.buf);
-    }
+    if (remove) { unlink(ctx->file.buf); }
   }
   free(ctx);
 }
@@ -144,6 +144,7 @@ int fstCountingWriterRead(FstCountingWriter* write, uint8_t* buf, uint32_t len)
 }
 
 uint32_t fstCountingWriterMaskedCheckSum(FstCountingWriter* write) { return 0; }
+
 int fstCountingWriterFlush(FstCountingWriter* write) {
   WriterCtx* ctx = write->wrt;
   ctx->flush(ctx);

source/libs/index/src/index_tfile.c

@@ -149,7 +149,6 @@ TFileReader* tfileReaderCreate(WriterCtx* ctx) {
 
   // T_REF_INC(reader);
   reader->ctx = ctx;
-
   if (0 != tfileReaderLoadHeader(reader)) {
     tfileReaderDestroy(reader);
     indexError("failed to load index header, suid: %" PRIu64 ", colName: %s", reader->header.suid,
@@ -542,8 +541,14 @@ static int tfileReaderLoadHeader(TFileReader* reader) {
   char buf[TFILE_HEADER_SIZE] = {0};
 
   int64_t nread = reader->ctx->readFrom(reader->ctx, buf, sizeof(buf), 0);
-  assert(nread == sizeof(buf));
+  if (nread == -1) {
+    //
+    indexError("actual Read: %d, to read: %d, errno: %d, filefd: %d, filename: %s", (int)(nread), (int)sizeof(buf),
+               errno, reader->ctx->file.fd, reader->ctx->file.buf);
+  }
+  // assert(nread == sizeof(buf));
   memcpy(&reader->header, buf, sizeof(buf));
+
   return 0;
 }
 static int tfileReaderLoadFst(TFileReader* reader) {
@@ -576,7 +581,7 @@ static int tfileReaderLoadTableIds(TFileReader* reader, int32_t offset, SArray*
   char*   buf = calloc(1, total);
   if (buf == NULL) { return -1; }
 
-  nread = ctx->read(ctx, buf, total);
+  nread = ctx->readFrom(ctx, buf, total, offset + sizeof(nid));
   assert(total == nread);
 
   for (int32_t i = 0; i < nid; i++) { taosArrayPush(result, (uint64_t*)buf + i); }

source/libs/index/test/fstTest.cc

@@ -189,7 +189,7 @@ void validateTFile(char* arg) {
 
   std::thread threads[NUM_OF_THREAD];
   // std::vector<std::thread> threads;
-  TFileReader* reader = tfileReaderOpen(arg, 0, 8417, "tag1");
+  TFileReader* reader = tfileReaderOpen(arg, 0, 295868, "tag1");
 
   for (int i = 0; i < NUM_OF_THREAD; i++) {
     threads[i] = std::thread(fst_get, reader->fst);

source/util/src/tfile.c

@@ -16,21 +16,19 @@
 #define _DEFAULT_SOURCE
 #include "os.h"
 #include "taoserror.h"
-#include "ulog.h"
-#include "tutil.h"
 #include "tref.h"
+#include "tutil.h"
+#include "ulog.h"
 
 static int32_t tsFileRsetId = -1;
 
 static int8_t tfInited = 0;
 
-static void tfCloseFile(void *p) {
-  taosCloseFile((int32_t)(uintptr_t)p);
-}
+static void tfCloseFile(void *p) { taosCloseFile((int32_t)(uintptr_t)p); }
 
 int32_t tfInit() {
   int8_t old = atomic_val_compare_exchange_8(&tfInited, 0, 1);
-  if(old == 1) return 0;
+  if (old == 1) return 0;
   tsFileRsetId = taosOpenRef(2000, tfCloseFile);
   if (tsFileRsetId > 0) {
     return 0;
@@ -79,9 +77,7 @@ int64_t tfOpenCreateWriteAppend(const char *pathname, int32_t flags, mode_t mode
   return tfOpenImp(fd);
 }
 
-int64_t tfClose(int64_t tfd) {
-  return taosRemoveRef(tsFileRsetId, tfd);
-}
+int64_t tfClose(int64_t tfd) { return taosRemoveRef(tsFileRsetId, tfd); }
 
 int64_t tfWrite(int64_t tfd, void *buf, int64_t count) {
   void *p = taosAcquireRef(tsFileRsetId, tfd);
@@ -109,6 +105,19 @@ int64_t tfRead(int64_t tfd, void *buf, int64_t count) {
   return ret;
 }
 
+int64_t tfPread(int64_t tfd, void *buf, int64_t count, int32_t offset) {
+  void *p = taosAcquireRef(tsFileRsetId, tfd);
+  if (p == NULL) return -1;
+
+  int32_t fd = (int32_t)(uintptr_t)p;
+
+  int64_t ret = pread(fd, buf, count, offset);
+  if (ret < 0) terrno = TAOS_SYSTEM_ERROR(errno);
+
+  taosReleaseRef(tsFileRsetId, tfd);
+  return ret;
+}
+
 int32_t tfFsync(int64_t tfd) {
   void *p = taosAcquireRef(tsFileRsetId, tfd);
   if (p == NULL) return -1;