FSNameSystem#addStoredBlock does not handle inconsistent block length correctly
Description:
Currently NameNode treats either the new replica or existing replicas as corrupt if the new replica's length is inconsistent with NN recorded block length. The correct behavior should be
1. For a block that is not under construction, the new replica should be marked as corrupt if its length is inconsistent (no matter shorter or longer) with the NN recorded block length;
2. For an under construction block, if the new replica's length is shorter than the NN recorded block length, the new replica could be marked as corrupt; if the new replica's length is longer, NN should update its recorded block length. But it should not mark existing replicas as corrupt. This is because NN recorded length for an under construction block does not accurately match the block length on datanode disk. NN should not judge an under construction replica to be corrupt by looking at the inaccurate information: its recorded block length.
分享到:
相关推荐
"Serial Port/Send File" will send the file which it's name is in "Input" box ;; - The file will be splited in 256 bytes for each block to sending. ;; - Between blocks will delay the number of ticks ...
- Example: `$ echo "Hello" >> file.txt` appends "Hello" to `file.txt`. 3. **Redirecting Standard Input (`)**: - Reads input from a file instead of the keyboard. - Example: `$ cat < file.txt` reads...
If a folder is selected, then will be created a file in that folder with the clipboard contents. * New utility: Size of Folders. This utility lets you see the size of the folders.a
- **Appending Text**: `echo "Some text" >> my_file.txt` appends the string "Some text" to the file `my_file.txt`. - **Reading from a File**: `< file` reads input from a file. For example, `cat < file....
复制代码 代码如下:import zipfileimport StringIO class InMemoryZip(object): def __init__... def append(self, filename_in_zip, file_contents): ”’Appends a file with name filename_in_zip and content
- From the S7A power tool it wasn't possible to open the online help file. Now it can be opened and also the context-sensitive help works properly. - When the signal conditioning function "S&M" ...
- `s[-2][-1]`: Accesses the last element of the second-to-last element in the list. - **Sequence Operations:** - `s1 + s2`: Concatenates two sequences. - `n * s1`: Repeats the sequence `n` times. ...
addTextToEditor appends text to the end instead of the beginning fix "isActive()" detection to work well with splits, #2806 fix doubling of icon tooltips, closes #2811 allow searching within mermaid ...
- (d) By always specifying the throws clause in every method header where file I/O is performed - **正确答案**:(a) By handling these problems by providing exception handlers - **解析**:在Java中,...
The method `getNumber` in `B` is not compatible with the overridden method `fileNumber` in `A`. The error occurs because the method signatures do not match (different names and return types). **...
fallbackOnBody: false, // Appends the cloned DOM Element into the Document's Body fallbackTolerance: 0, // Specify in pixels how far the mouse should move before it's considered as a drag. scroll:...
cbWorkLoadSuite 在密钥集上的写操作的分布: x - x - x - x - x - x - x - x - x sets x - x - x - x - x - x - x - x - x - x - x - xx - x deletes x - x x - x - x appends x - x - x x - x prepends x - x x - ...
All files are contained in a single installer file which includes the following: vsdrvr.h declaration file vsdrvr.lib library stub file vsdrvr.dll run-time library vsdrvr_r1p30.pdf (this file) ...
Dumps DF2 filter coefficient vectors to file in C language format in forward order. Creates two files "filename.h" which defines the size of the array and declares the arrays as extern, and "filename....
- **动态属性**:通过`$appends`和`$hidden`属性控制序列化时显示的字段。 6. **Blade模板**: - **条件语句和循环**:在视图中轻松实现逻辑判断和迭代。 - **组件和插槽**:可复用的视图部分,提高代码的组织和...
你还可以通过`appends()`方法保持其他查询参数: ```php $users = User::where('active', true) ->where('name', 'like', '%John%') ->appends(['search' => 'John']) ->paginate(15); ``` ### 7. `lluminate\...
$appendData=$data->appends(array( 'search'=>$search, 'perPage'=>$perPage, )); return view('admin/customer/customerList',compact('data')); } ``` 在上面的代码中,`orderByRaw("FIELD(status,"....
文字模式 DOM的基于字符的显示 npm install text-mode var TextMode = require ( 'text-mode' ) ; bower install text-mode < script src =" bower_components/text-mode/text-mode-min.js ...//appends to elemen
nc2zarr 一个Python工具,可将多个NetCDF文件转换为单个Zarr数据集。 创建Python环境 $ conda install -n base -c conda-forge mamba ... Reads one or more input datasets and writes or appends them to a s
通过`$appends`属性,可以添加额外的属性到序列化结果中。 7. **软删除(Soft Deleting)**:Eloquent支持软删除,即不会真正从数据库中移除记录,而是标记为已删除。只需在模型上启用`use SoftDeletes`并添加`...