2.0.6.23

Enhancements in this version aid in addressing HTTP Timeout errors, such as:

Dell EMC Elastic Cloud Storage (ECS) Streamer
CStreamerObject::EnumStart method failed: DirListing Failed Error = 12002 - The operation timed out IP: ecs.company.com:9021 1552: 12002 - The operation timed out

The cause of this error is that the streamer is sending ECS a request for a bucket listing, and ECS is not responding in the allotted time.

Two configuration parameters have been added to aid in addressing this issue:

TIMEOUT_SEC

LISTING_PAGE

Changes in Host Parameters
 

Examples:

Increase the timeout to 6 minutes and the lower maximum number of objects to request to 200:

TIMEOUT_SEC=360;LISTING_PAGE=200

Security Enhancements

Defaults have changed to favor increased security:

TLS1.0=false

TLS1.1=false

TLS1.2=true

S3V4=true

2.0.6.21

Changes in Host Parameters

Add ENABLE_WRITE_TEST flag. By default the “Write Test” of the Test method is disabled. In previous versions, the “Write Test” has been enabled by default. The “Write Test” can be enabled by adding the “ENABLE_WRITE_TEST” parameter to the Host field.

Remove DISABLE_WRITE_TEST flag. This flag will continue to be accepted if it exists, but it is ignored.

Add the ability to specify which TLS versions to select. By default, TLS 1.0, 1.1 and 1.2 can be negotiated. This setting can be modified with the following parameters to the Host field:

TLS1.0=true/false: default: true

TLS1.1=true/false: default: true

TLS1.2=true/false: default: true

Add Profiling: Adding PROFILE_METHODS to the Host parameter causes the streamer to take some performance measurements:

Measure the amount of time each method takes to run (Read, Write, Enum, and so on).

Count the number of visits to each method

Every hour output these statistics as: visits, shortest, longest, and average.

If the streamer COM object is unloaded, the output will be the statistics gathered so far.

The stats are output in the Data directory—usually C:\ProgramData\DellEMCEVStreamer.

Better Parameter validation: Log error if parameter entered is not valid. Prior versions would ignore unknown parameters.

Parameters are now accepted case-independent

Boolean parameters now accept a wider range of syntax: FLAG[=0|1|true|false]

Examples:

LB (same as LB=1)

LB=1

LB=true (same as LB=1)

Lb=True

lb = 0 (do not set LB flag)

Functionality Enhancements

Retry HTTP request errors for a wider range of errors, such as SSL errors.

HTTP: Optimize downloading large objects from ECS. Increase the receive queue to prevent excessive task switching.

Optimize garbage collection of various internal structures

Bug Fixes

SDK-538: V4 authentication could be selected even if S3V4 option was not specified

2.0.6.18

Fix for:

SDK-532: EV Streamer: May log: Severe Error! Dump file created here: <path>

SDK-533: EV Streamer: dump files generated similar to:  StorageManagement.exe_translate_exceptions_GUID.dmp

2.0.6.16

Fix for:

SDK-530: EV Streamer: Allow DTQuery to be used for replication check if using ECS 3.4

SDK-528: EV Streamer: if safe-copy = 0, it does not comply with Veritas API spec: remotecopies = 0

2.0.6.13

Update of the Microsoft Visual C++ redistributables

SDK-514: EV Streamer: Error log shows: Unexpected retentionType found: 0

SDK-517: EV Streamer setup does not always upgrade the VC++ redistributable to the required level

SDK-518: EV Streamer: EnumNext returns StoredDate against local time instead of UTC

SDK-519: EV Streamer: EnumNext: if time range is specified, it may not return the entries at start and end of range

2.0.6.2

Faster, more efficient method used to test for bucket level retention.

Better testing of writes when there is bucket level retention of 1 second.

Support for S3 V4 authentication.

Performance monitor stats can be reset.

Admin can specify an install path for the ECS Streamer driver on installation.

Remote installation utility is provided.

2.0.5.6

The Test() method no longer tests for bucket level retention. The admin must set the option DISABLE_WRITE_TEST or Test() will fail.

Metadata search info call removed from initialization.

2.0.5.4

Windows Performance Monitor counter objects added.

The ECS Streamer install directory is added to the Windows PATH environment variable. Addition of the directory allows users to run ECSCheck.exe or EVResetPerf.exe from any directory.

2.0.4.1

Throttle Streamer Instances – the number of outstanding EVStreamer requests by default limited to 65.

Faster enumeration of objects in a vault store.

Improved management of the connection object.

2.0.3.2

Corrections made to the error codes returned when some errors are encountered.

2.0.3.1

Corrections to error returns from ECS Streamer to Enterprise Vault.

Added DONT_TEST_STOPPING switch on HOST – Dell Support use only

Changed the time that the streamer will wait before retrying an ECS node marked as offline to 12 minutes from 2 hours.

2.0.2.3

Improved handling of Partition listings 

Installation

Install file is an .msi instead of an .exe.Cached Connections

S3 connections are cached to greatly reduce the overhead involved with establishing connections. The streamer frequently runs the “Init()” entry, which performs the following ECS requests:

Get endpoint list

Test if search metadata can be used.

With the new version, that initialization only occurs the first time the connection is requested. It will only redo it if any of the parameters change or if the S3 request fails.

Allow HTTPS connections to Ignore Bad CN Error

An HTTPS connection typically fails if the hostname provided does not match the name in the certificate—for example, when an IP address is used. The user can use the IGNORE_BAD_COMMON_NAME option in host parameter to allow the connection to succeed.

Relax syntax for Host Name Options

The current syntax for each hostname option is "<option>=<value>". The “=<value>” is now optional if <value> would be 1. Therefore, the following syntax is now accepted:

10.1.2.3;LB;DISABLE_WRITE_TEST

2.0.1.5

Improved error log messaging

Additional IP range specification

Writes of old files have their retention handled properly, previously an error would be generated.

ecscheck utility.

2.0.0.7

Better error log messages and diagnostics

Multipart uploads are multithreaded and will perform better

Better overall performance

Improved Stability

Integrated IP load balancer across ECS nodes in the VDC being used.

1.0.16

Fix to partial file read requests which where erroneously on occasion performing full file reads unnecessarily.

1.0.14

Default MAX_CONNS changed to 65

Added optional SHOWCHUNKS configuration parameter to assist debugging

Added optional RDT parameter to ensure requests are not cached 

Added option DTHOSTS parameter to assist with debugging 

Issue caused by caching in the Windows HTTP library resolved.

1.0.12

Modified the Test() function. Since Enterprise Vault itself also calls the Test functionality, it is not reasonable to fail the test if the dtquery call fails. This information is logged but does not fail the connectivity test. This portion of the test is only done when safecopy==2. Unfortunately, dtquery has problems during TSO. So any call to the Test functionality by Enterprise Vault when safecopy==2 during TSO, would cause archiving to stop. During archiving, any failure in dtquery sets the safe copy boolean to false and archiving continues.

1.0.11

Added a fix for a potential Read() problem where Windows may require a larger buffer