Merge updates/NFSE-4116

(cherry picked from commit bad3d54)
hse-project · Apr 20, 2020 · fba1e36 · fba1e36
1 parent 5f13543
commit fba1e36
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Showing 12 changed files with 14 additions and 59 deletions.
diff --git a/src/mongo/db/storage/hse/src/hse.h b/src/mongo/db/storage/hse/src/hse.h
@@ -344,8 +344,6 @@ class KVDB {
 
     virtual struct hse_kvdb* kvdb_handle() = 0;
 
-    virtual Status kvdb_kvs_count(unsigned int* count) = 0;
-
     virtual Status kvdb_get_names(unsigned int* count, char*** kvs_list) = 0;
 
     virtual Status kvdb_free_names(char** kvsv) = 0;

diff --git a/src/mongo/db/storage/hse/src/hse_impl.cpp b/src/mongo/db/storage/hse/src/hse_impl.cpp
@@ -104,10 +104,6 @@ Status KVDBImpl::kvdb_kvs_close(KVSHandle handle) {
     return Status(::hse_kvdb_kvs_close(kvsH));
 }
 
-Status KVDBImpl::kvdb_kvs_count(unsigned int* count) {
-    return Status(::hse_kvdb_kvs_count(_handle, count));
-}
-
 Status KVDBImpl::kvdb_get_names(unsigned int* count, char*** kvs_list) {
     return Status(::hse_kvdb_get_names(_handle, count, kvs_list));
 }

diff --git a/src/mongo/db/storage/hse/src/hse_impl.h b/src/mongo/db/storage/hse/src/hse_impl.h
@@ -62,8 +62,6 @@ class KVDBImpl : public KVDB {
         return _handle;
     }
 
-    virtual Status kvdb_kvs_count(unsigned int* count);
-
     virtual Status kvdb_get_names(unsigned int* count, char*** kvs_list);
 
     virtual Status kvdb_free_names(char** kvsv);

diff --git a/src/mongo/db/storage/hse/src/hse_kvscursor.cpp b/src/mongo/db/storage/hse/src/hse_kvscursor.cpp
@@ -70,9 +70,8 @@ KvsCursor* create_cursor(KVSHandle kvs,
                          KVDBData& prefix,
                          bool forward,
                          const struct CompParms& compparms,
-                         ClientTxn* lnkd_txn,
-                         bool enableRa) {
-    return new KvsCursor(kvs, prefix, forward, lnkd_txn, compparms, enableRa);
+                         ClientTxn* lnkd_txn) {
+    return new KvsCursor(kvs, prefix, forward, lnkd_txn, compparms);
 }
 
 //
@@ -82,12 +81,10 @@ KvsCursor::KvsCursor(KVSHandle handle,
                      KVDBData& prefix,
                      bool forward,
                      ClientTxn* lnkd_txn,
-                     const struct CompParms& compparms,
-                     bool enableRa)
+                     const struct CompParms& compparms)
     : _kvs((struct hse_kvs*)handle),
       _pfx(prefix),
       _forward(forward),
-      _enableRa{enableRa},
       _lnkd_txn(lnkd_txn),
       _cursor(0),
       _start(0),
@@ -123,10 +120,6 @@ KvsCursor::KvsCursor(KVSHandle handle,
         opspec.kop_flags |= HSE_KVDB_KOP_FLAG_REVERSE;
     }
 
-    if (_enableRa) {
-        opspec.kop_flags |= HSE_KVDB_KOP_FLAG_CURSOR_RA;
-    }
-
     while (true) {
         if (retries < FIB_LEN) {
             sleepTime = RETRY_FIB_SEQ_EAGAIN[retries % FIB_LEN];
@@ -202,10 +195,6 @@ Status KvsCursor::update(ClientTxn* lnkd_txn) {
                 opspec.kop_flags |= HSE_KVDB_KOP_FLAG_REVERSE;
             }
 
-            if (_enableRa) {
-                opspec.kop_flags |= HSE_KVDB_KOP_FLAG_CURSOR_RA;
-            }
-
             _hseKvsCursorCreateCounter.add();
             auto lt = _hseKvsCursorCreateLatency.begin();
             st = Status{::hse_kvs_cursor_create(_kvs, &opspec, _pfx.data(), _pfx.len(), &_cursor)};
@@ -290,7 +279,6 @@ Status KvsCursor::read(KVDBData& key, KVDBData& val, bool& eof) {
 }
 
 int KvsCursor::_read_kvs() {
-    int ret = 0;
     Status st{};
     int retries = 0;
     unsigned long long sleepTime = 0;

diff --git a/src/mongo/db/storage/hse/src/hse_kvscursor.h b/src/mongo/db/storage/hse/src/hse_kvscursor.h
@@ -61,17 +61,15 @@ KvsCursor* create_cursor(KVSHandle kvs,
                          KVDBData& prefix,
                          bool forward,
                          const struct CompParms& compparms,
-                         ClientTxn* lnkd_txn = 0,
-                         bool enableRa = false);
+                         ClientTxn* lnkd_txn = 0);
 
 class KvsCursor {
 public:
     KvsCursor(KVSHandle kvs,
               KVDBData& prefix,
               bool forward,
               ClientTxn* lnkd_txn,
-              const struct CompParms& compparms,
-              bool enableRa = false);
+              const struct CompParms& compparms);
 
     virtual ~KvsCursor();
 
@@ -101,7 +99,6 @@ class KvsCursor {
     struct hse_kvs* _kvs;  // not owned
     KVDBData _pfx;
     bool _forward{true};
-    bool _enableRa{false};
     ClientTxn* _lnkd_txn;  // not owned
     std::mutex _mutex;
     bool _is_ready;

diff --git a/src/mongo/db/storage/hse/src/hse_record_store.cpp b/src/mongo/db/storage/hse/src/hse_record_store.cpp
@@ -2026,19 +2026,14 @@ void KVDBOplogStoreCursor::_reallySeek(const RecordId& id) {
     _needSeek = false;
 }
 
-bool KVDBOplogStoreCursor::_needReadAhead() {
-    return (_hseOplogCursorReadRate.getRate() > READ_AHEAD_THRESHOLD);
-}
-
 KvsCursor* KVDBOplogStoreCursor::_getMCursor() {
     KVDBRecoveryUnit* ru = KVDBRecoveryUnit::getKVDBRecoveryUnit(_opctx);
     hse::Status st;
 
     if (!_cursorValid) {
         KVDBData compatKey{(uint8_t*)&_prefixValBE, sizeof(_prefixValBE)};
         _updateReadUntil();
-        st = ru->beginOplogScan(
-            _colKvs, compatKey, _forward, &_mCursor, this->_compparms, _needReadAhead());
+        st = ru->beginOplogScan(_colKvs, compatKey, _forward, &_mCursor, this->_compparms);
         invariantHseSt(st);
         _cursorValid = true;
         _needSeek =

diff --git a/src/mongo/db/storage/hse/src/hse_record_store.h b/src/mongo/db/storage/hse/src/hse_record_store.h
@@ -688,7 +688,6 @@ class KVDBOplogStoreCursor : public KVDBCappedRecordStoreCursor {
     // virtual
     hse::Status _currCursorRead(
         KVDBRecoveryUnit* ru, KvsCursor* cursor, KVDBData& elKey, KVDBData& elVal, bool& eof);
-    inline bool _needReadAhead();
 
     // virtual
     bool _currIsHidden(const RecordId& loc);
@@ -700,9 +699,6 @@ class KVDBOplogStoreCursor : public KVDBCappedRecordStoreCursor {
 
     RecordId _readUntilForOplog;
     shared_ptr<KVDBOplogBlockManager> _opBlkMgr{};
-
-    // Heuristic oplog read rate that determines whether read ahead is needed.
-    const int64_t READ_AHEAD_THRESHOLD{100};
 };
 
 class KVDBCappedVisibilityManager {

diff --git a/src/mongo/db/storage/hse/src/hse_recovery_unit.cpp b/src/mongo/db/storage/hse/src/hse_recovery_unit.cpp
@@ -341,12 +341,11 @@ hse::Status KVDBRecoveryUnit::beginOplogScan(const KVSHandle& h,
                                              KVDBData pfx,
                                              bool forward,
                                              KvsCursor** cursor,
-                                             const struct CompParms& compparm,
-                                             bool readAhead) {
+                                             const struct CompParms& compparm) {
     KvsCursor* lcursor = 0;
 
     try {
-        lcursor = create_cursor(h, pfx, forward, compparm, _txn, readAhead);
+        lcursor = create_cursor(h, pfx, forward, compparm, _txn);
     } catch (...) {
         return hse::Status(ENOMEM);
     }

diff --git a/src/mongo/db/storage/hse/src/hse_recovery_unit.h b/src/mongo/db/storage/hse/src/hse_recovery_unit.h
@@ -165,8 +165,7 @@ class KVDBRecoveryUnit : public RecoveryUnit {
                                KVDBData prefix,
                                bool forward,
                                KvsCursor** cursor,
-                               const struct hse::CompParms& compparm,
-                               bool readAhead = false);
+                               const struct hse::CompParms& compparm);
     hse::Status oplogCursorUpdate(KvsCursor* cursor);
     hse::Status oplogCursorSeek(KvsCursor* cursor,
                                 const KVDBData& key,

diff --git a/src/mongo/db/storage/hse/src/hse_stats.cpp b/src/mongo/db/storage/hse/src/hse_stats.cpp
@@ -336,7 +336,7 @@ KVDBStatAppBytes _hseAppBytesReadCounter{"hseAppBytesRead"};
 KVDBStatAppBytes _hseAppBytesWrittenCounter{"hseAppBytesWritten"};
 
 // Rate stats
-KVDBStatRate _hseOplogCursorReadRate{"hseOplogCursorRead", true};
+KVDBStatRate _hseOplogCursorReadRate{"hseOplogCursorRead"};
 
 // End Stats declarations
 

diff --git a/src/mongo/db/storage/hse/src/hse_stats.h b/src/mongo/db/storage/hse/src/hse_stats.h
@@ -153,7 +153,7 @@ class KVDBStatAppBytes final : public KVDBStat {
 
 class KVDBStatRate final : public KVDBStat {
 public:
-    KVDBStatRate(const string name, bool enableOverride);
+    KVDBStatRate(const string name, bool enableOverride = false);
     static void init();
     virtual void appendTo(BSONObjBuilder& bob) const override;
     void update(uint64_t incr = 1);

diff --git a/src/mongo/db/storage/hse/src/hse_test.cpp b/src/mongo/db/storage/hse/src/hse_test.cpp
@@ -222,21 +222,16 @@ namespace mongo {
 class KVDBREGTEST : public unittest::Test {
 protected:
     void setUp() {
-        unsigned kvsCnt = 0;
-        hse::Status st = _db.kvdb_kvs_count(&kvsCnt);
-        ASSERT_EQUALS(0, st.getErrno());
-
-        ASSERT_EQ((unsigned int)0, kvsCnt);
-
-        //      ASSERT_EQ(0, _db._testGetMaxIdx());
+        // ASSERT_EQ(0, _db._testGetMaxIdx());
 
         // Create all the kvses
         for (unsigned int i = 0; i < TEST_KVS_CNT; i++) {
             hse_params_create(&_params[i]);
             ASSERT_FALSE(nullptr == _params[i]);
 
             string paramName = string("kvs.pfx_len");
-            st = _db.kvdb_params_set(_params[i], paramName, std::to_string(hse::DEFAULT_PFX_LEN));
+            hse::Status st =
+                _db.kvdb_params_set(_params[i], paramName, std::to_string(hse::DEFAULT_PFX_LEN));
             ASSERT_EQUALS(0, st.getErrno());
             st = _db.kvdb_kvs_make(_kvsNames[i], _params[i]);
             ASSERT_EQUALS(0, st.getErrno());
@@ -245,12 +240,6 @@ class KVDBREGTEST : public unittest::Test {
 
             hse_params_destroy(_params[i]);
         }
-
-
-        st = _db.kvdb_kvs_count(&kvsCnt);
-        ASSERT_EQUALS(0, st.getErrno());
-
-        ASSERT_EQ(TEST_KVS_CNT, kvsCnt);
     }
 
     void tearDown() {