On Tue, Jul 24, 2012 at 3:09 AM, Lyska Anton <[email protected]> wrote:
> Hi,
>
> after first insert you are closing your table in finally block. thats why
> thread hangs
>
I thought I need to close HTableInterface to return it back to the pool. Is
that not the case?
>
> 24.07.2012 3:41, Mohit Anchlia пишет:
>
>> I am now using HTablePool but still the call hangs at "put". My code is
>> something like this:
>>
>>
>> hTablePool = *new* HTablePool(config,*MAX_POOL_**SIZE*);
>>
>> result = *new* SessionTimelineDAO(hTablePool.**getTable(t.name()),
>> ColumnFamily.*S_T_MTX*);
>>
>> public SessionTimelineDAO(**HTableInterface hTableInterface,
>> ColumnFamily
>> cf){
>> this.tableInt = hTableInterface;
>> this.cf = cf.name().getBytes();
>> log.info("Table " + hTableInterface + " " + cf);
>> }
>>
>> @Override
>> public void create(DataStoreModel dm) throws DataStoreException {
>> if(null == dm || null == dm.getKey()){
>> log.error("DataStoreModel is invalid");
>> return;
>> }
>>
>> Put p = new Put(dm.getKey().array());
>>
>> for(ByteBuffer bf : dm.getCols().keySet()){
>> p.add(cf, bf.array(), dm.getColumnValue(bf).array())**;
>> }
>>
>> try {
>> log.info("In create ");
>> tableInt.put(p);
>> } catch (IOException e) {
>> log.error("Error writing " , e);
>> throw new DataStoreException(e);
>> } finally{
>> cleanUp();
>>
>> }
>> }
>>
>>
>> private void cleanUp() {
>> if(null != tableInt){
>> try {
>> tableInt.close();
>> } catch (IOException e) {
>> log.error("Failed while closing table interface", e);
>> }
>> }
>> }
>> On Mon, Jul 23, 2012 at 4:15 PM, Mohit Anchlia <[email protected]
>> >wrote:
>>
>>
>>> On Mon, Jul 23, 2012 at 3:54 PM, Elliott Clark <[email protected]
>>> >wrote:
>>>
>>> HTable is not thread safe[1]. It's better to use HTablePool if you want
>>>> to
>>>> share things across multiple threads.[2]
>>>>
>>>> 1
>>>> http://hbase.apache.org/**apidocs/org/apache/hadoop/**
>>>> hbase/client/HTable.html<http://hbase.apache.org/apidocs/org/apache/hadoop/hbase/client/HTable.html>
>>>> 2
>>>>
>>>> http://hbase.apache.org/**apidocs/org/apache/hadoop/**
>>>> hbase/client/HTablePool.html<http://hbase.apache.org/apidocs/org/apache/hadoop/hbase/client/HTablePool.html>
>>>>
>>>> Thanks! I'll change my code to use HtablePool
>>>> On Mon, Jul 23, 2012 at 3:48 PM, Mohit Anchlia <[email protected]
>>>>
>>>>> wrote:
>>>>> I am writing a stress tool to test my specific use case. In my current
>>>>> implementation HTable is a global static variable that I initialize
>>>>> just
>>>>> once and use it accross multiple threads. Is this ok?
>>>>>
>>>>> My row key consists of (timestamp - (timestamp % 1000)) and cols are
>>>>> counters. What I am seeing is that when I run my test after first row
>>>>> is
>>>>> created the application just hangs. I just wanted to check if there are
>>>>> obvious things that I should watch out for.
>>>>>
>>>>> I am currently testing few threads in eclipse, but I'll still try and
>>>>> generate stackTrace
>>>>>
>>>>>
>>>
>
